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353 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

§ 172.102

Special provisions. 

(a) 

General. 

When column 7 of the 

§ 172.101 table refers to a special provi-
sion for a hazardous material, the 
meaning and requirements of that pro-
vision are as set forth in this section. 
When a special provision specifies 
packaging or packaging require-
ments— 

(1) The special provision is in addi-

tion to the standard requirements for 
all packagings prescribed in § 173.24 of 
this subchapter and any other applica-
ble packaging requirements in subparts 
A and B of part 173 of this subchapter; 
and 

(2) To the extent a special provision 

imposes limitations or additional re-
quirements on the packaging provi-
sions set forth in column 8 of the 
§ 172.101 table, packagings must con-
form to the requirements of the special 
provision. 

(b) 

Description of codes for special pro-

visions. 

Special provisions contain 

packaging provisions, prohibitions, ex-
ceptions from requirements for par-
ticular quantities or forms of materials 
and requirements or prohibitions appli-
cable to specific modes of transpor-
tation, as follows: 

(1) A code consisting only of numbers 

(for example, ‘‘11’’) is multi-modal in 
application and may apply to bulk and 
non-bulk packagings. 

(2) A code containing the letter ‘‘A’’ 

refers to a special provision which ap-
plies only to transportation by air-
craft. 

(3) A code containing the letter ‘‘B’’ 

refers to a special provision that ap-
plies only to bulk packaging require-
ments. Unless otherwise provided in 
this subchapter, these special provi-
sions do not apply to UN, IM Specifica-
tion portable tanks or IBCs. 

(4) A code containing the letters ‘‘IB’’ 

or ‘‘IP’’ refers to a special provision 
that applies only to transportation in 
IBCs. 

(5) A code containing the letter ‘‘N’’ 

refers to a special provision which ap-
plies only to non-bulk packaging re-
quirements. 

(6) A code containing the letter ‘‘R’’ 

refers to a special provision which ap-
plies only to transportation by rail. 

(7) A code containing the letter ‘‘T’’ 

refers to a special provision which ap-

plies only to transportation in UN or 
IM Specification portable tanks. 

(8) A code containing the letters 

‘‘TP’’ refers to a portable tank special 
provision for UN or IM Specification 
portable tanks that is in addition to 
those provided by the portable tank in-
structions or the requirements in part 
178 of this subchapter. 

(9) A code containing the letter ‘‘W’’ 

refers to a special provision that ap-
plies only to transportation by water. 

(c) 

Tables of special provisions. 

The fol-

lowing tables list, and set forth the re-
quirements of, the special provisions 
referred to in column 7 of the § 172.101 
table. 

(1) 

Numeric provisions. 

These provi-

sions are multi-modal and apply to 
bulk and non-bulk packagings: 

Code/Special Provisions 

1

This material is poisonous by inhalation 

(see § 171.8 of this subchapter) in Hazard 
Zone A (see § 173.116(a) or § 173.133(a) of this 
subchapter), and must be described as an 
inhalation hazard under the provisions of 
this subchapter. 

2

This material is poisonous by inhalation 

(see § 171.8 of this subchapter) in Hazard 
Zone B (see § 173.116(a) or § 173.133(a) of this 
subchapter), and must be described as an 
inhalation hazard under the provisions of 
this subchapter. 

3

This material is poisonous by inhalation 

(see § 171.8 of this subchapter) in Hazard 
Zone C (see § 173.116(a) of this subchapter), 
and must be described as an inhalation 
hazard under the provisions of this sub-
chapter. 

4

This material is poisonous by inhalation 

(see § 171.8 of this subchapter) in Hazard 
Zone D (see § 173.116(a) of this subchapter), 
and must be described as an inhalation 
hazard under the provisions of this sub-
chapter. 

5

If this material meets the definition for a 

material poisonous by inhalation (see 
§ 171.8 of this subchapter), a shipping name 
must be selected which identifies the inha-
lation hazard, in Division 2.3 or Division 
6.1, as appropriate. 

6

This material is poisonous-by-inhalation 

and must be described as an inhalation 
hazard under the provisions of this sub-
chapter. 

8

A hazardous substance that is not a haz-

ardous waste may be shipped under the 
shipping description ‘‘Other regulated sub-
stances, liquid 

or 

solid, n.o.s.’’, as appro-

priate. In addition, for solid materials, spe-
cial provision B54 applies. 

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354 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

9

Packaging for certain PCBs for disposal 

and storage is prescribed by EPA in 40 CFR 
761.60 and 761.65. 

11

The hazardous material must be pack-

aged as either a liquid or a solid, as appro-
priate, depending on its physical form at 55 

°

C (131 

°

F) at atmospheric pressure. 

12

In concentrations greater than 40 per-

cent, this material has strong oxidizing 
properties and is capable of starting fires 
in contact with combustible materials. If 
appropriate, a package containing this ma-
terial must conform to the additional la-
beling requirements of § 172.402 of this sub-
chapter. 

13

The words ‘‘Inhalation Hazard’’ shall be 

entered on each shipping paper in associa-
tion with the shipping description, shall be 
marked on each non-bulk package in asso-
ciation with the proper shipping name and 
identification number, and shall be marked 
on two opposing sides of each bulk pack-
age. Size of marking on bulk package must 
conform to § 172.302(b) of this subchapter. 
The requirements of §§ 172.203(m) and 
172.505 of this subchapter do not apply. 

14

Motor fuel antiknock mixtures are: 

a. Mixtures of one or more organic lead 

mixtures (such as tetraethyl lead, 
triethylmethyl lead, diethyldimethyl 
lead, ethyltrimethyl lead, and 
tetramethyl lead) with one or more halo-
gen compounds (such as ethylene 
dibromide and ethylene dichloride), hy-
drocarbon solvents or other equally effi-
cient stabilizers; or 

b. tetraethyl lead. 

15

This entry applies to ‘‘Chemical kits’’ 

and ‘‘First aid kits’’ containing one or 
more compatible items of hazardous mate-
rials in boxes, cases, 

etc. 

that, for example, 

are used for medical, analytical, diag-
nostic, testing, or repair purposes. Kits 
that are carried on board transport vehi-
cles for first aid or operating purposes are 
not subject to the requirements of this 
subchapter. 

16

This description applies to smokeless 

powder and other solid propellants that are 
used as powder for small arms and have 
been classed as Division 1.3C, 1.4C and Divi-
sion 4.1 in accordance with § 173.56 of this 
subchapter. 

19

For domestic transportation only, the 

identification number ‘‘UN1075’’ may be 
used in place of the identification number 
specified in column (4) of the § 172.101 table. 
The identification number used must be 
consistent on package markings, shipping 
papers and emergency response informa-
tion. 

21

This material must be stabilized by ap-

propriate means (e.g., addition of chemical 
inhibitor, purging to remove oxygen) to 
prevent dangerous polymerization (see 
§ 173.21(f) of this subchapter). 

22

If the hazardous material is in dispersion 

in organic liquid, the organic liquid must 
have a flash point above 50 

°

C (122 

°

F). 

23

This material may be transported under 

the provisions of Division 4.1 only if it is so 
packed that the percentage of diluent will 
not fall below that stated in the shipping 
description at any time during transport. 
Quantities of not more than 500 g per pack-
age with not less than 10 percent water by 
mass may also be classed in Division 4.1, 
provided a negative test result is obtained 
when tested in accordance with test series 
6(c) of the UN Manual of Tests and Criteria 
(IBR, see § 171.7 of this subchapter). 

24

Alcoholic beverages containing more 

than 70 percent alcohol by volume must be 
transported as materials in Packing Group 
II. Alcoholic beverages containing more 
than 24 percent but not more than 70 per-
cent alcohol by volume must be trans-
ported as materials in Packing Group III. 

26

This entry does not include ammonium 

permanganate, the transport of which is 
prohibited except when approved by the 
Associate Administrator. 

28 The dihydrated sodium salt of 

dichloroisocyanuric acid does not meet the 
criteria for inclusion in Division 5.1 (Oxi-
dizer) and is not subject to the require-
ments of this subchapter unless meeting 
the criteria for inclusion in another class 
or division. 

30

Sulfur is not subject to the requirements 

of this subchapter if transported in a non- 
bulk packaging or if formed to a specific 
shape (for example, prills, granules, pel-
lets, pastilles, or flakes). A bulk packaging 
containing sulfur is not subject to the 
placarding requirements of subpart F of 
this part, if it is marked with the appro-
priate identification number as required by 
subpart D of this part. Molten sulfur must 
be marked as required by § 172.325 of this 
subchapter. 

31

Materials which have undergone suffi-

cient heat treatment to render them non- 
hazardous are not subject to the require-
ments of this subchapter. 

32

Polymeric beads and molding compounds 

may be made from polystyrene, 
poly(methyl methacrylate) or other poly-
meric material. 

33

Ammonium nitrites and mixtures of an 

inorganic nitrite with an ammonium salt 
are prohibited. 

34

The commercial grade of calcium nitrate 

fertilizer, when consisting mainly of a dou-
ble salt (calcium nitrate and ammonium 
nitrate) containing not more than 10 per-
cent ammonium nitrate and at least 12 per-
cent water of crystallization, is not subject 
to the requirements of this subchapter. 

35

Antimony sulphides and oxides which do 

not contain more than 0.5 percent of ar-
senic calculated on the total mass do not 
meet the definition of Division 6.1. 

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355 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

37

Unless it can be demonstrated by testing 

that the sensitivity of the substance in its 
frozen state is no greater than in its liquid 
state, the substance must remain liquid 
during normal transport conditions. It 
must not freeze at temperatures above 

¥

15 

°

C (5 

°

F). 

38

If this material shows a violent effect in 

laboratory tests involving heating under 
confinement, the labeling requirements of 
Special Provision 53 apply, and the mate-
rial must be packaged in accordance with 
packing method OP6 in § 173.225 of this sub-
chapter. If the SADT of the technically 
pure substance is higher than 75 

°

C, the 

technically pure substance and formula-
tions derived from it are not self-reactive 
materials and, if not meeting any other 
hazard class, are not subject to the re-
quirements of this subchapter. 

39

This substance may be carried under pro-

visions other than those of Class 1 only if 
it is so packed that the percentage of 
water will not fall below that stated at any 
time during transport. When phlegmatized 
with water and inorganic inert material, 
the content of urea nitrate must not ex-
ceed 75 percent by mass and the mixture 
should not be capable of being detonated 
by test 1(a)(i) or test 1(a)(ii) in the UN 
Manual of Tests and Criteria (IBR, see 
§ 171.7 of this subchapter). 

40

Polyester resin kits consist of two com-

ponents: A base material (either Class 3 or 
Division 4.1, Packing Group II or III) and 
an activator (organic peroxide), each sepa-
rately packed in an inner packaging. The 
organic peroxide must be type D, E, or F, 
not requiring temperature control. The 
components may be placed in the same 
outer packaging provided they will not 
interact dangerously in the event of leak-
age. The Packing Group assigned will be II 
or III, according to the classification cri-
teria for either Class 3 or Division 4.1, as 
appropriate, applied to the base material. 
Additionally, unless otherwise excepted in 
this subchapter, polyester resin kits must 
be packaged in specification combination 
packagings based on the performance level 
of the base material contained within the 
kit. 

41

This material at the Packing Group II 

hazard criteria level may be transported in 
Large Packagings. 

43

The membrane filters, including paper 

separators and coating or backing mate-
rials, that are present in transport, must 
not be able to propagate a detonation as 
tested by one of the tests described in the 
UN Manual of Tests and Criteria, Part I, 
Test series 1(a) (IBR, see § 171.7 of this sub-
chapter). On the basis of the results of 
suitable burning rate tests, and taking 
into account the standard tests in the UN 
Manual of Tests and Criteria, Part III, sub-
section 33.2.1 (IBR, see § 171.7 of this sub-

chapter), nitrocellulose membrane filters 
in the form in which they are to be trans-
ported that do not meet the criteria for a 
Division 4.1 material are not subject to the 
requirements of this subchapter. Pack-
agings must be so constructed that explo-
sion is not possible by reason of increased 
internal pressure. Nitrocellulose mem-
brane filters covered by this entry, each 
with a mass not exceeding 0.5 g, are not 
subject to the requirements of this sub-
chapter when contained individually in an 
article or a sealed packet. 

44

The formulation must be prepared so 

that it remains homogenous and does not 
separate during transport. Formulations 
with low nitrocellulose contents and nei-
ther showing dangerous properties when 
tested for their ability to detonate, 
deflagrate or explode when heated under 
defined confinement by the appropriate 
test methods and criteria in the UN Man-
ual of Tests and Criteria (IBR, see § 171.7 of 
this subchapter), nor classed as a Division 
4.1 (flammable solid) when tested in ac-
cordance with the procedures specified in 
§ 173.124 of this subchapter (chips, if nec-
essary, crushed and sieved to a particle 
size of less than 1.25 mm), are not subject 
to the requirements of this subchapter. 

45

Temperature should be maintained be-

tween 18 

°

C (64.4 

°

F) and 40 

°

C (104 

°

F). 

Tanks containing solidified methacrylic 
acid must not be reheated during trans-
port. 

46

This material must be packed in accord-

ance with packing method OP6 (see § 173.225 
of this subchapter). During transport, it 
must be protected from direct sunshine 
and stored (or kept) in a cool and well-ven-
tilated place, away from all sources of 
heat. 

47

Mixtures of solids that are not subject to 

this subchapter and flammable liquids may 
be transported under this entry without 
first applying the classification criteria of 
Division 4.1, provided there is no free liquid 
visible at the time the material is loaded 
or at the time the packaging or transport 
unit is closed. Except when the liquids are 
fully absorbed in solid material contained 
in sealed bags, for single packagings, each 
packaging must correspond to a design 
type that has passed a leakproofness test 
at the Packing Group II level. Sealed pack-
ets and articles containing less than 10 mL 
of a Class 3 liquid in Packing Group II or 
III absorbed onto a solid material are not 
subject to this subchapter provided there is 
no free liquid in the packet or article. 

48

Mixtures of solids that are not subject to 

this subchapter and toxic liquids may be 
transported under this entry without first 
applying the classification criteria of Divi-
sion 6.1, provided there is no free liquid 
visible at the time the material is loaded 
or at the time the packaging or transport 

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356 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

unit is closed. For single packagings, each 
packaging must correspond to a design 
type that has passed a leakproofness test 
at the Packing Group II level. This entry 
may not be used for solids containing a 
Packing Group I liquid. 

49

Mixtures of solids that are not subject to 

this subchapter and corrosive liquids may 
be transported under this entry without 
first applying the classification criteria of 
Class 8, provided there is no free liquid 
visible at the time the material is loaded 
or at the time the packaging or transport 
unit is closed. For single packagings, each 
packaging must correspond to a design 
type that has passed a leakproofness test 
at the Packing Group II level. 

50

Cases, cartridge, empty with primer 

which are made of metallic or plastic cas-
ings and meeting the classification criteria 
of Division 1.4 are not regulated for domes-
tic transportation. 

51

This description applies to items pre-

viously described as ‘‘Toy propellant de-
vices, Class C’’ and includes reloadable 
kits. Model rocket motors containing 30 
grams or less propellant are classed as Di-
vision 1.4S and items containing more than 
30 grams of propellant but not more than 
62.5 grams of propellant are classed as Di-
vision 1.4C. 

52 This entry may only be used for sub-

stances that are too insensitive for accept-
ance into Class 1 (explosive) when tested in 
accordance with Test Series 2 in the UN 
Manual of Tests and Criteria, Part I (incor-
porated by reference; see § 171.7 of this sub-
chapter). 

53

Packages of these materials must bear 

the subsidiary risk label, ‘‘EXPLOSIVE’’, 
and the subsidiary hazard class/division 
must be entered in parentheses imme-
diately following the primary hazard class 
in the shipping description, unless other-
wise provided in this subchapter or 
through an approval issued by the Asso-
ciate Administrator, or the competent au-
thority of the country of origin. A copy of 
the approval shall accompany the shipping 
papers. 

54

Maneb or maneb preparations not meet-

ing the definition of Division 4.3 or any 
other hazard class are not subject to the 
requirements of this subchapter when 
transported by motor vehicle, rail car, or 
aircraft. 

55

This device must be approved in accord-

ance with § 173.56 of this subchapter by the 
Associate Administrator. 

56

A means to interrupt and prevent deto-

nation of the detonator from initiating the 
detonating cord must be installed between 
each electric detonator and the detonating 
cord ends of the jet perforating guns before 
the charged jet perforating guns are of-
fered for transportation. 

57

Maneb 

or 

Maneb preparations stabilized 

against self-heating need not be classified 
in Division 4.2 when it can be dem-
onstrated by testing that a volume of 1 m

3

 

of substance does not self-ignite and that 
the temperature at the center of the sam-
ple does not exceed 200 

°

C, when the sample 

is maintained at a temperature of not less 
than 75 

°

±

°

C for a period of 24 hours, in 

accordance with procedures set forth for 
testing self-heating materials in the UN 
Manual of Tests and Criteria (IBR, see 
§ 171.7 of this subchapter). 

58

Aqueous solutions of Division 5.1 inor-

ganic solid nitrate substances are consid-
ered as not meeting the criteria of Division 
5.1 if the concentration of the substances 
in solution at the minimum temperature 
encountered in transport is not greater 
than 80% of the saturation limit. 

59

Ferrocerium, stabilized against corro-

sion, with a minimum iron content of 10 
percent is not subject to the requirements 
of this subchapter. 

61

A chemical oxygen generator is spent if 

its means of ignition and all or a part of its 
chemical contents have been expended. 

62

Oxygen generators (see § 171.8 of this sub-

chapter) are not authorized for transpor-
tation under this entry. 

64

The group of alkali metals includes lith-

ium, sodium, potassium, rubidium, and 
caesium. 

65

The group of alkaline earth metals in-

cludes magnesium, calcium, strontium, 
and barium. 

66

Formulations of these substances con-

taining not less than 30 percent non-vola-
tile, non-flammable phlegmatizer are not 
subject to this subchapter. 

70

Black powder that has been classed in ac-

cordance with the requirements of § 173.56 
of this subchapter may be reclassed and of-
fered for domestic transportation as a Di-
vision 4.1 material if it is offered for trans-
portation and transported in accordance 
with the limitations and packaging re-
quirements of § 173.170 of this subchapter. 

74

During transport, this material must be 

protected from direct sunshine and stored 
or kept in a cool and well-ventilated place, 
away from all sources of heat. 

78

This entry may not be used to describe 

compressed air which contains more than 
23.5 percent oxygen. Compressed air con-
taining greater than 23.5 percent oxygen 
must be shipped using the description 
‘‘Compressed gas, oxidizing, n.o.s., 
UN3156.’’ 

79

This entry may not be used for mixtures 

that meet the definition for oxidizing gas. 

81

Polychlorinated biphenyl items, as de-

fined in 40 CFR 761.3, for which specifica-
tion packagings are impractical, may be 
packaged in non-specification packagings 
meeting the general packaging require-
ments of subparts A and B of part 173 of 

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357 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

this subchapter. Alternatively, the item 
itself may be used as a packaging if it 
meets the general packaging requirements 
of subparts A and B of part 173 of this sub-
chapter. 

101

The name of the particular substance or 

article must be specified. 

102

The ends of the detonating cord must be 

tied fast so that the explosive cannot es-
cape. The articles may be transported as in 
Division 1.4 Compatibility Group D (1.4D) if 
all of the conditions specified in § 173.63(a) 
of this subchapter are met. 

105

The word ‘‘Agents’’ may be used instead 

of ‘‘Explosives’’ when approved by the As-
sociate Administrator. 

106

The recognized name of the particular 

explosive may be specified in addition to 
the type. 

107

The classification of the substance is ex-

pected to vary especially with the particle 
size and packaging but the border lines 
have not been experimentally determined; 
appropriate classifications should be 
verified following the test procedures in 
§§ 173.57 and 173.58 of this subchapter. 

108

Fireworks must be so constructed and 

packaged that loose pyrotechnic composi-
tion will not be present in packages during 
transportation. 

109

Rocket motors must be nonpropulsive 

in transportation unless approved in ac-
cordance with § 173.56 of this subchapter. A 
rocket motor to be considered ‘‘nonpropul-
sive’’ must be capable of unrestrained 
burning and must not appreciably move in 
any direction when ignited by any means. 

110

Fire extinguishers transported under 

UN1044 and oxygen cylinders transported 
for emergency use under UN1072 may in-
clude installed actuating cartridges (car-
tridges, power device of Division 1.4C or 
1.4S), without changing the classification 
of Division 2.2, provided the aggregate 
quantity of deflagrating (propellant) explo-
sives does not exceed 3.2 grams per cyl-
inder. Oxygen cylinders with installed ac-
tuating cartridges as prepared for trans-
portation must have an effective means of 
preventing inadvertent activation. 

111

Explosive substances of Division 1.1 

Compatibility Group A (1.1A) are forbidden 
for transportation if dry or not desen-
sitized, unless incorporated in a device. 

113

The sample must be given a tentative 

approval by an agency or laboratory in ac-
cordance with § 173.56 of this subchapter. 

114

Jet perforating guns, charged, oil well, 

without detonator may be reclassed to Di-
vision 1.4 Compatibility Group D (1.4D) if 
the following conditions are met: 
a. The total weight of the explosive con-

tents of the shaped charges assembled in 
the guns does not exceed 90.5 kg (200 
pounds) per vehicle; and 

b. The guns are packaged in accordance 

with Packing Method US 1 as specified in 
§ 173.62 of this subchapter. 

115

Boosters with detonator, detonator as-

semblies and boosters with detonators in 
which the total explosive charge per unit 
does not exceed 25 g, and which will not 
mass detonate and undergo only limited 
propagation in the shipping package may 
be assigned to 1.4B classification code. 
Mass detonate means more than 90 percent 
of the devices tested in a package explode 
practically simultaneously. Limited propa-
gation means that if one booster near the 
center of the package is exploded, the ag-
gregate weight of explosives, excluding ig-
nition and delay charges, in this and all 
additional boosters in the outside pack-
aging that explode may not exceed 25 g. 

116

Fuzes, detonating may be classed in Di-

vision 1.4 if the fuzes do not contain more 
than 25 g of explosive per fuze and are 
made and packaged so that they will not 
cause functioning of other fuzes, explosives 
or other explosive devices if one of the 
fuzes detonates in a shipping packaging or 
in adjacent packages. 

117

If shipment of the explosive substance is 

to take place at a time that freezing 
weather is anticipated, the water con-
tained in the explosive substance must be 
mixed with denatured alcohol so that 
freezing will not occur. 

118

This substance may not be transported 

under the provisions of Division 4.1 unless 
specifically authorized by the Associate 
Administrator (see UN0143 or UN0150 as ap-
propriate). 

119

This substance, when in quantities of 

not more than 11.5 kg (25.3 pounds), with 
not less than 10 percent water, by mass, 
also may be classed as Division 4.1, pro-
vided a negative test result is obtained 
when tested in accordance with test series 
6(c) of the UN Manual of Tests and Criteria 
(IBR, see § 171.7 of this subchapter). 

120

The phlegmatized substance must be 

significantly less sensitive than dry PETN. 

121

This substance, when containing less al-

cohol, water or phlegmatizer than speci-
fied, may not be transported unless ap-
proved by the Associate Administrator. 

123

Any explosives, blasting, type C con-

taining chlorates must be segregated from 
explosives containing ammonium nitrate 
or other ammonium salts. 

125

Lactose or glucose or similar materials 

may be used as a phlegmatizer provided 
that the substance contains not less than 
90%, by mass, of phlegmatizer. These mix-
tures may be classified in Division 4.1 when 
tested in accordance with test series 6(c) of 
the UN Manual of Tests and Criteria (IBR, 
see § 171.7 of this subchapter) and approved 
by the Associate Administrator. Testing 
must be conducted on at least three pack-
ages as prepared for transport. Mixtures 

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358 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

containing at least 98%, by mass, of 
phlegmatizer are not subject to the re-
quirements of this subchapter. Packages 
containing mixtures with not less than 90% 
by mass, of phlegmatizer need not bear a 
POISON subsidiary risk label. 

127

Mixtures containing oxidizing and or-

ganic materials transported under this 
entry may not meet the definition and cri-
teria of a Class 1 material. (See § 173.50 of 
this subchapter.) 

128

Regardless of the provisions of 

§ 172.101(c)(12), aluminum smelting by-prod-
ucts and aluminum remelting by-products 
described under this entry, meeting the 
definition of Class 8, Packing Group II and 
III may be classed as a Division 4.3 mate-
rial and transported under this entry. The 
presence of a Class 8 hazard must be com-
municated as required by this part for sub-
sidiary hazards. 

129

These materials may not be classified 

and transported unless authorized by the 
Associate Administrator on the basis of re-
sults from Series 2 Test and a Series 6(c) 
Test from the UN Manual of Tests and Cri-
teria (IBR, see § 171.7 of this subchapter) on 
packages as prepared for transport. The 
packing group assignment and packaging 
must be approved by the Associate Admin-
istrator for Hazardous Materials Safety on 
the basis of the criteria in § 173.21 of this 
subchapter and the package type used for 
the Series 6(c) test. 

130

‘‘Batteries, dry, sealed, n.o.s.,’’ com-

monly referred to as dry batteries, are her-
metically sealed and generally utilize met-
als (other than lead) and/or carbon as elec-
trodes. These batteries are typically used 
for portable power applications. The re-
chargeable (and some non-rechargeable) 
types have gelled alkaline electrolytes 
(rather than acidic) making it difficult for 
them to generate hydrogen or oxygen when 
overcharged and therefore, differentiating 
them from non-spillable batteries. Dry bat-
teries specifically covered by another 
entry in the § 172.101 Table must be trans-
ported in accordance with the require-
ments applicable to that entry. For exam-
ple, nickel-metal hydride batteries trans-
ported by vessel in certain quantities are 
covered by another entry (

see 

Batteries, 

nickel-metal hydride, UN3496). Dry bat-
teries not specifically covered by another 
entry in the § 172.101 Table are covered by 
this entry (

i.e., 

Batteries, dry, sealed, 

n.o.s.) and are not subject to requirements 
of this subchapter except for the following: 
(a) 

Incident reporting. 

For transportation 

by aircraft, a telephone report in accord-
ance with § 171.15(a) is required if a fire, 
violent rupture, explosion or dangerous 
evolution of heat (

i.e., 

an amount of heat 

sufficient to be dangerous to packaging 
or personal safety to include charring of 
packaging, melting of packaging, scorch-

ing of packaging, or other evidence) oc-
curs as a direct result of a dry battery. 
For all modes of transportation, a writ-
ten report submitted, retained, and up-
dated in accordance with § 171.16 is re-
quired if a fire, violent rupture, explosion 
or dangerous evolution of heat occurs as 
a direct result of a dry battery or bat-
tery-powered device. 

(b) 

Preparation for transport. 

Batteries and 

battery-powered device(s) containing 
batteries must be prepared and packaged 
for transport in a manner to prevent: 

(1) A dangerous evolution of heat; 
(2) Short circuits, including but not lim-

ited to the following methods: 

(i) Packaging each battery or each battery- 

powered device when practicable, in fully 
enclosed inner packagings made of non- 
conductive material; 

(ii) Separating or packaging batteries in a 

manner to prevent contact with other 
batteries, devices or conductive mate-
rials (

e.g., 

metal) in the packagings; or 

(iii) Ensuring exposed terminals or connec-

tors are protected with non-conductive 
caps, non-conductive tape, or by other 
appropriate means; and 

(3) Damage to terminals. If not impact re-

sistant, the outer packaging should not 
be used as the sole means of protecting 
the battery terminals from damage or 
short circuiting. Batteries must be se-
curely cushioned and packed to prevent 
shifting which could loosen terminal 
caps or reorient the terminals to produce 
short circuits. Batteries contained in de-
vices must be securely installed. Ter-
minal protection methods include but 
are not limited to the following: 

(i) Securely attaching covers of sufficient 

strength to protect the terminals; 

(ii) Packaging the battery in a rigid plastic 

packaging; or 

(iii) Constructing the battery with termi-

nals that are recessed or otherwise pro-
tected so that the terminals will not be 
subjected to damage if the package is 
dropped. 

(c) 

Additional air transport requirements. 

For 

a battery whose voltage (electrical po-
tential) exceeds 9 volts— 

(1) When contained in a device, the device 

must be packaged in a manner that pre-
vents unintentional activation or must 
have an independent means of preventing 
unintentional activation (

e.g., 

packaging 

restricts access to activation switch, 
switch caps or locks, recessed switches, 
trigger locks, temperature sensitive cir-
cuit breakers, 

etc.

); and 

(2) An indication of compliance with this 

special provision must be provided by 
marking each package with the words 
‘‘not restricted’’ or by including the 
words ‘‘not restricted’’ on a transport 

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359 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

document such as an air waybill accom-
panying the shipment. 

(d) 

Used or spent battery exception. 

Used or 

spent dry batteries of both non-recharge-
able and rechargeable designs, with a 
marked rating up to 9-volt that are com-
bined in the same package and trans-
ported by highway or rail for recycling, 
reconditioning, or disposal are not sub-
ject to this special provision or any other 
requirement of the HMR. Note that bat-
teries utilizing different chemistries (

i.e., 

those battery chemistries specifically 
covered by another entry in the § 172.101 
Table) as well as dry batteries with a 
marked rating greater than 9-volt may 
not be combined with used or spent bat-
teries in the same package. Note also 
that this exception does not apply to bat-
teries that have been reconditioned for 
reuse. 

131

This material may not be offered for 

transportation unless approved by the As-
sociate Administrator. 

132

This description may only be used for 

ammonium nitrate-based compound fer-
tilizers. They must be classified in accord-
ance with the procedure as set out in the 
Manual of Tests and Criteria, part III, sec-
tion 39 (IBR, 

see 

§ 171.7 of this subchapter). 

Fertilizers meeting the criteria for this 
identification number are only subject to 
the requirements of this subchapter when 
offered for transportation and transported 
by air or vessel. 

134

This entry applies only to vehicles pow-

ered by wet batteries, sodium batteries, 
lithium metal batteries or lithium ion bat-
teries, and equipment powered by wet bat-
teries or sodium batteries that are trans-
ported with these batteries installed. Lith-
ium batteries installed in a cargo trans-
port unit, designed only to provide power 
external to the transport unit must use the 
proper shipping name ‘‘Lithium batteries 
installed in cargo transport unit’’ found in 
the § 172.101 Hazardous Materials Table. 
a. For the purpose of this special provision, 

vehicles are self-propelled apparatus de-
signed to carry one or more persons or 
goods. Examples of such vehicles are 
electrically-powered cars, motorcycles, 
scooters, three- and four-wheeled vehi-
cles or motorcycles, trucks, locomotives, 
bicycles (pedal cycles with an electric 
motor) and other vehicles of this type 
(

e.g., 

self-balancing vehicles or vehicles 

not equipped with at least one seating 
position), lawn tractors, self-propelled 
farming and construction equipment, 
boats, aircraft, wheelchairs and other 
mobility aids. This includes vehicles 
transported in a packaging. In this case, 
some parts of the vehicle may be de-
tached from its frame to fit into the 
packaging. 

b. Examples of equipment are lawnmowers, 

cleaning machines, or model boats and 
model aircraft. Equipment powered by 
lithium metal batteries or lithium ion 
batteries must be described using the en-
tries ‘‘Lithium metal batteries contained 
in equipment’’ or ‘‘Lithium metal bat-
teries packed with equipment’’ or ‘‘Lith-
ium ion batteries contained in equip-
ment’’ or ‘‘Lithium ion batteries packed 
with equipment,’’ as appropriate. 

c. Self-propelled vehicles or equipment 

that also contain an internal combustion 
engine must be described using the en-
tries ‘‘Engine, internal combustion, 
flammable gas powered’’ or ‘‘Engine, in-
ternal combustion, flammable liquid 
powered’’ or ‘‘Vehicle, flammable gas 
powered’’ or ‘‘Vehicle, flammable liquid 
powered,’’ as appropriate. These entries 
include hybrid electric vehicles powered 
by both an internal combustion engine 
and batteries. Additionally, self-pro-
pelled vehicles or equipment that con-
tain a fuel cell engine must be described 
using the entries ‘‘Engine, fuel cell, flam-
mable gas powered’’ or ‘‘Engine, fuel cell, 
flammable liquid powered’’ or ‘‘Vehicle, 
fuel cell, flammable gas powered’’ or 
‘‘Vehicle, fuel cell, flammable liquid 
powered,’’ as appropriate. These entries 
include hybrid electric vehicles powered 
by a fuel cell engine, an internal combus-
tion engine, and batteries. 

135

Internal combustion engines installed in 

a vehicle must be described using ‘‘Vehicle, 
flammable gas powered’’ or ‘‘Vehicle, flam-
mable liquid powered,’’ as appropriate. If a 
vehicle is powered by a flammable liquid 
and a flammable gas internal combustion 
engine, it must be described using ‘‘Vehi-
cle, flammable gas powered.’’ This includes 
hybrid electric vehicles powered by both an 
internal combustion engine and wet, so-
dium or lithium batteries installed. If a 
fuel cell engine is installed in a vehicle, 
the vehicle must be described using ‘‘Vehi-
cle, fuel cell, flammable gas powered’’ or 
‘‘Vehicle, fuel cell, flammable liquid pow-
ered,’’ as appropriate. This includes hybrid 
electric vehicles powered by a fuel cell, an 
internal combustion engine, and wet, so-
dium or lithium batteries installed. For 
the purpose of this special provision, vehi-
cles are self-propelled apparatus designed 
to carry one or more persons or goods. Ex-
amples of such vehicles are cars, motor-
cycles, trucks, locomotives, scooters, 
three- and four-wheeled vehicles or motor-
cycles, lawn tractors, self-propelled farm-
ing and construction equipment, boats, and 
aircraft. Furthermore, lithium batteries 
installed in a cargo transport unit, de-
signed only to provide power external to 
the transport unit must be described using 
the proper shipping name ‘‘Lithium bat-
teries installed in cargo transport unit’’ 

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360 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

found in the § 172.101 Hazardous Materials 
Table. 

136

This entry applies only to articles, ma-

chinery, and apparatus containing haz-
ardous materials as an integral element of 
the article, machinery, or apparatus. It 
may not be used to describe articles, ma-
chinery, or apparatus for which a proper 
shipping name exists in the § 172.101 Table. 
Except when approved by the Associate 
Administrator, these items may only con-
tain hazardous materials for which excep-
tions are referenced in Column (8) of the 
§ 172.101 Table and are provided in part 173, 
subparts D and G, of this subchapter. Haz-
ardous materials shipped under this entry 
are excepted from the labeling require-
ments of this subchapter unless offered for 
transportation or transported by aircraft 
and are not subject to the placarding re-
quirements of subpart F of this part. Ori-
entation markings as described in 
§ 172.312(a)(2) are required when liquid haz-
ardous materials may escape due to incor-
rect orientation. The article, machinery, 
or apparatus, if unpackaged, or the pack-
aging in which it is contained shall be 
marked ‘‘Dangerous goods in articles’’ or 
‘‘Dangerous goods in machinery’’ or ‘‘Dan-
gerous goods in apparatus’’ as appropriate, 
with the identification number UN3363. For 
transportation by aircraft, articles, ma-
chinery, or apparatus, may not contain 
any material forbidden for transportation 
by passenger or cargo aircraft. The Asso-
ciate Administrator may except from the 
requirements of this subchapter articles, 
machinery, and apparatus provided: 
a. It is shown that it does not pose a sig-

nificant risk in transportation; 

b. The quantities of hazardous materials do 

not exceed those specified in § 173.4a of 
this subchapter; and 

c. The equipment, and machinery or appa-

ratus articles conforms with § 173.222 of 
this subchapter. 

137

Cotton, dry; flax, dry; sisal, dry; and 

tampico fiber, dry are not subject to the 
requirements of this subchapter when they 
are baled in accordance with ISO 8115, 
‘‘Cotton Bales—Dimensions and Density’’ 
(IBR, see § 171.7 of this subchapter) to a 
density of not less than 360 kg/m

3

(22.1 lb/ 

ft

3

) for cotton, 400 kg/m

3

(24.97 lb/ft

3

) for 

flax, 620 kg/m

3

(38.71 lb/ft

3

) for sisal and 360 

kg/m

3

(22.1 lb/ft

3

) for tampico fiber and 

transported in a freight container or closed 
transport vehicle. 

138

This entry applies to lead compounds 

which, when mixed in a ratio of 1:1,000 with 
0.07 M (Molar concentration) hydrochloric 
acid and stirred for one hour at a tempera-
ture of 23 

°

±

°

C, exhibit a solubility of 

more than 5%. Lead compounds which, 
when mixed in a ratio of 1:1,000 with 0.07 M 
(Molar concentration) hydrochloric acid 
and stirred for one hour at a temperature 

of 23 

°

±

°

C, exhibit a solubility of 5% or 

less are not subject to the requirements of 
this subchapter unless they meet criteria 
as another hazard class or division. Lead 
compounds that have a solubility of 5% or 
less in accordance with this special provi-
sion are not subject to the requirements of 
this subchapter that pertain to Marine 
Pollutants. 

139

Use of the ‘‘special arrangement’’ proper 

shipping names for international ship-
ments must be made under an IAEA Cer-
tificate of Competent Authority issued by 
the Associate Administrator in accordance 
with the requirements in § 173.471, § 173.472, 
or § 173.473 of this subchapter. Use of these 
proper shipping names for domestic ship-
ments may be made only under a DOT spe-
cial permit, as defined in, and in accord-
ance with the requirements of subpart B of 
part 107 of this subchapter. 

140

This material is regulated only when it 

meets the defining criteria for a hazardous 
substance or a marine pollutant. In addi-
tion, the column 5 reference is modified to 
read ‘‘III’’ on those occasions when this 
material is offered for transportation or 
transported by highway or rail. 

141

A toxin obtained from a plant, animal, 

or bacterial source containing an infec-
tious substance, or a toxin contained in an 
infectious substance, must be classed as 
Division 6.2, described as an infectious sub-
stance, and assigned to UN 2814 or UN 2900, 
as appropriate. 

142

These hazardous materials may not be 

classified and transported unless author-
ized by the Associate Administrator. The 
Associate Administrator will base the au-
thorization on results from Series 2 tests 
and a Series 6(c) test from the UN Manual 
of Tests and Criteria (IBR, see § 171.7 of 
this subchapter) on packages as prepared 
for transport in accordance with the re-
quirements of this subchapter. 

144

If transported as a residue in an under-

ground storage tank (UST), as defined in 40 
CFR 280.12, that has been cleaned and 
purged or rendered inert according to the 
American Petroleum Institute (API) 
Standard 1604 (IBR, see § 171.7 of this sub-
chapter), then the tank and this material 
are not subject to any other requirements 
of this subchapter. However, sediments re-
maining in the tank that meet the defini-
tion for a hazardous material are subject 
to the applicable regulations of this sub-
chapter. 

145

This entry applies to formulations that 

neither detonate in the cavitated state nor 
deflagrate in laboratory testing, show no 
effect when heated under confinement, ex-
hibit no explosive power, and are ther-
mally stable (self-accelerating decomposi-
tion temperature (SADT) at 60 

°

C (140 

°

F) 

or higher for a 50 kg (110.2 lbs.) package). 
Formulations not meeting these criteria 

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361 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

must be transported under the provisions 
applicable to the appropriate entry in the 
Organic Peroxide Table in § 173.225 of this 
subchapter. 

146

This description may be used for a ma-

terial that poses a hazard to the environ-
ment but does not meet the definition for 
a hazardous waste or a hazardous sub-
stance, as defined in § 171.8 of this sub-
chapter, or any hazard class, as defined in 
part 173 of this subchapter, if it is des-
ignated as environmentally hazardous by 
another Competent Authority. This provi-
sion may be used for both domestic and 
international shipments. 

147

This entry applies to non-sensitized 

emulsions, suspensions, and gels consisting 
primarily of a mixture of ammonium ni-
trate and fuel, intended to produce a Type 
E blasting explosive only after further 
processing prior to use. The mixture for 
emulsions typically has the following com-
position: 60–85% ammonium nitrate; 5–30% 
water; 2–8% fuel; 0.5–4% emulsifier or 
thickening agent; 0–10% soluble flame sup-
pressants; and trace additives. Other inor-
ganic nitrate salts may replace part of the 
ammonium nitrate. The mixture for sus-
pensions and gels typically has the fol-
lowing composition: 60–85% ammonium ni-
trate; 0–5% sodium or potassium per-
chlorate; 0–17% hexamine nitrate or 
monomethylamine nitrate; 5–30% water; 2– 
15% fuel; 0.5–4% thickening agent; 0–10% 
soluble flame suppressants; and trace addi-
tives. Other inorganic nitrate salts may re-
place part of the ammonium nitrate. These 
substances must satisfy the criteria for 
classification as an ammonium nitrate 
emulsion of Test Series 8 of the UN Manual 
of Tests and Criteria, Part I, Section 18 
(IBR, 

see 

§ 171.7 of this subchapter), and 

may not be classified and transported un-
less approved by the Associate Adminis-
trator. 

148

For domestic transportation, this entry 

directs to § 173.66 for: 
a. The standards for transporting a single 

bulk hazardous material for blasting by 
cargo tank motor vehicles (CTMV); and 

b. The standards for CTMVs capable of 

transporting multiple hazardous mate-
rials for blasting in bulk and non-bulk 
packagings (

i.e., 

a multipurpose bulk 

truck (MBT)). 

149

When transported as a limited quantity 

or a consumer commodity, the maximum 
net capacity specified in § 173.150(b)(2) of 
this subchapter for inner packagings may 
be increased to 5 L (1.3 gallons). 

150

This description may only be used for 

ammonium nitrate-based fertilizers. They 
must be classified in accordance with the 
procedure as set out in the Manual of Tests 
and Criteria, part III, section 39 (IBR, 

see 

§ 171.7 of this subchapter). 

151

If this material meets the definition of 

a flammable liquid in § 173.120 of this sub-
chapter, a FLAMMABLE LIQUID label is 
also required and the basic description on 
the shipping paper must indicate the Class 
3 subsidiary hazard. 

155

Fish meal, fish scrap and krill meal may 

not be transported if the temperature at 
the time of loading either exceeds 35 

°

C (95 

°

F), or exceeds 5 

°

C (41 

°

F) above the ambi-

ent temperature, whichever is higher. 

156

Asbestos that is immersed or fixed in a 

natural or artificial binder material, such 
as cement, plastic, asphalt, resins or min-
eral ore, or contained in manufactured 
products is not subject to the requirements 
of this subchapter. 

157

When transported as a limited quantity 

or a consumer commodity, the maximum 
net capacity specified in § 173.151(b)(1)(i) of 
this subchapter for inner packagings may 
be increased to 5 kg (11 pounds). 

159

This material must be protected from 

direct sunshine and kept in a cool, well- 
ventilated place away from sources of heat. 

160

This entry applies to safety devices for 

vehicles, vessels or aircraft, 

e.g. 

air bag in-

flators, air bag modules, seat-belt 
pretensioners, and pyromechanical devices 
containing Class 1 (explosive) materials or 
materials of other hazard classes. These ar-
ticles must be tested in accordance with 
Test series 6(c) of Part I of the UN Manual 
of Tests and Criteria (incorporated by ref-
erence; see § 171.7 of this subchapter), with 
no explosion of the device, no fragmenta-
tion of device casing or pressure vessel, 
and no projection hazard or thermal effect 
that would significantly hinder fire-fight-
ing or other emergency response efforts in 
the immediate vicinity. If the air bag in-
flator unit satisfactorily passes the series 
6(c) test, it is not necessary to repeat the 
test on the air bag module. This entry does 
not apply to life saving appliances de-
scribed in § 173.219 (UN2990 and UN3072). 

162

This material may be transported under 

the provisions of Division 4.1 only if it is 
packed so that at no time during transport 
will the percentage of diluent fall below 
the percentage that is stated in the ship-
ping description. 

163

Substances must satisfactorily pass 

Test Series 8 of the UN Manual of Tests 
and Criteria, Part I, Section 18 (IBR, see 
§ 171.7 of this subchapter). 

164

Substances must not be transported 

under this entry unless approved by the 
Associate Administrator on the basis of 
the results of appropriate tests according 
to Part I of the UN Manual of Tests and 
Criteria (IBR, see § 171.7 of this sub-
chapter). The material must be packaged 
so that the percentage of diluent does not 
fall below that stated in the approval at 
any time during transportation. 

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362 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

165

These substances are susceptible to 

exothermic decomposition at elevated tem-
peratures. Decomposition can be initiated 
by heat, moisture or by impurities (e.g., 
powdered metals (iron, manganese, cobalt, 
magnesium)). During the course of trans-
portation, these substances must be shaded 
from direct sunlight and all sources of heat 
and be placed in adequately ventilated 
areas. 

166

When transported in non-friable tablet 

form, calcium hypochlorite, dry, may be 
transported as a Packing Group III mate-
rial. 

167

These storage systems must always be 

considered as containing hydrogen. A 
metal hydride storage system installed in 
or intended to be installed in a vehicle or 
equipment or in vehicle or equipment com-
ponents must be approved for transport by 
the Associate Administrator. A copy of the 
approval must accompany each shipment. 

168

For lighters containing a Division 2.1 

gas (

see 

§ 171.8 of this subchapter), rep-

resentative samples of each new lighter de-
sign must be examined and successfully 
tested as specified in § 173.308(b)(3). For cri-
teria in determining what is a new lighter 
design, 

see 

§ 173.308(b)(1). For transpor-

tation of new lighter design samples for ex-
amination and testing, 

see 

§ 173.308(b)(2). 

The examination and testing of each light-
er design must be performed by a person 
authorized by the Associate Administrator 
under the provisions of subpart E of part 
107 of this chapter, as specified in 
§ 173.308(a)(4). For continued use of approv-
als dated prior to January 1, 2012, 

see 

§ 173.308(b)(5). 
For non-pressurized lighters containing a 

Class 3 (flammable liquid) material, its 
design, description, and packaging must 
be approved by the Associate Adminis-
trator prior to being offered for transpor-
tation or transported in commerce. In 
addition, a lighter design intended to 
contain a non-pressurized Class 3 mate-
rial is excepted from the examination 
and testing criteria specified in 
§ 173.308(b)(3). An unused lighter or a 
lighter that is cleaned of residue and 
purged of vapors is not subject to the re-
quirements of this subchapter. 

169

This entry applies to lighter refills (

see 

§ 171.8 of this subchapter) that contain a 
Division 2.1 (flammable) gas but do not 
contain an ignition device. Lighter refills 
offered for transportation under this entry 
may not exceed 4 fluid ounces capacity 
(7.22 cubic inches) or contain more than 65 
grams of fuel. A lighter refill exceeding 4 
fluid ounces capacity (7.22 cubic inches) or 
containing more than 65 grams of fuel 
must be classed as a Division 2.1 material, 
described with the proper shipping name 
appropriate for the material, and packaged 
in the packaging specified in part 173 of 

this subchapter for the flammable gas con-
tained therein. In addition, a container ex-
ceeding 4 fluid ounces volumetric capacity 
(7.22 cubic inches) or containing more than 
65 grams of fuel may not be connected or 
manifolded to a lighter or similar device 
and must also be described and packaged 
according to the fuel contained therein. 
For transportation by passenger-carrying 
aircraft, the net mass of lighter refills may 
not exceed 1 kg per package, and, for 
cargo-only aircraft, the net mass of lighter 
refills may not exceed 15 kg per package. 
See § 173.306(h) of this subchapter. 

170

Air must be eliminated from the vapor 

space by nitrogen or other means. 

171

This entry may only be used when the 

material is transported in non-friable tab-
let form or for granular or powered mix-
tures that have been shown to meet the PG 
III criteria in § 173.127. 

172

This entry includes alcohol mixtures 

containing up to 5% petroleum products. 

173

For adhesives, printing inks, printing 

ink-related materials, paints, paint-related 
materials, and resin solutions which are 
assigned to UN3082, and do not meet the 
definition of another hazard class, metal or 
plastic packaging for substances of pack-
ing groups II and III in quantities of 5 L 
(1.3 gallons) or less per packaging are not 
required to meet the UN performance 
package testing when transported: 
a. Except for transportation by aircraft, in 

palletized loads, a pallet box or unit load 
device (

e.g. 

individual packaging placed 

or stacked and secured by strapping, 
shrink or stretch-wrapping or other suit-
able means to a pallet). For vessel trans-
port, the palletized loads, pallet boxes or 
unit load devices must be firmly packed 
and secured in closed cargo transport 
units; or 

b. Except for transportation by aircraft, as 

an inner packaging of a combination 
packaging with a maximum net mass of 
40 kg (88 pounds). For transportation by 
aircraft, as an inner packaging of a com-
bination packaging with a maximum 
gross mass of 30 kg when packaged as a 
limited quantity in accordance with 
§ 173.27(f). 

175

This substance must be stabilized when 

in concentrations of not more than 99%. 

176

This entry must be used for formalde-

hyde solutions containing methanol as a 
stabilizer. Formaldehyde solutions not 
containing methanol and not meeting the 
Class 3 flammable liquid criteria must be 
described using a different proper shipping 
name. 

177

Gasoline, or, ethanol and gasoline mix-

tures, for use in internal combustion en-
gines (

e.g.

, in automobiles, stationary en-

gines and other engines) must be assigned 
to Packing Group II regardless of vari-
ations in volatility. 

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363 

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§ 172.102 

181

When a package contains a combination 

of lithium batteries contained in equip-
ment and lithium batteries packed with 
equipment, the following requirements 
apply: 
a. The shipper must ensure that all appli-

cable requirements of § 173.185 of this sub-
chapter are met. The total mass of lith-
ium batteries contained in any package 
must not exceed the quantity limits in 
columns (9A) and (9B) for passenger air-
craft or cargo aircraft, as applicable; 

b. Except as provided in § 173.185(c)(3) of 

this subchapter, the package must be 
marked ‘‘UN 3091 Lithium metal bat-
teries packed with equipment’’, or ‘‘UN 
3481 Lithium ion batteries packed with 
equipment,’’ as appropriate. If a package 
contains both lithium metal batteries 
and lithium ion batteries packed with 
and contained in equipment, the package 
must be marked as required for both bat-
tery types. However, button cell bat-
teries installed in equipment (including 
circuit boards) need not be considered; 
and 

c. The shipping paper must indicate ‘‘UN 

3091 Lithium metal batteries packed with 
equipment’’ or ‘‘UN 3481 Lithium ion bat-
teries packed with equipment,’’ as appro-
priate. If a package contains both lith-
ium metal batteries and lithium ion bat-
teries packed with and contained in 
equipment, then the shipping paper must 
indicate both ‘‘UN 3091 Lithium metal 
batteries packed with equipment’’ and 
‘‘UN 3481 Lithium ion batteries packed 
with equipment.’’ 

182

Equipment containing only lithium bat-

teries must be classified as either UN 3091 
or UN 3481. 

196

The nitrocellulose must meet the cri-

teria of the Bergmann-Junk test or methyl 
violet paper test in the UN Manual of Tests 
and Criteria, Appendix 10 (IBR, 

see 

§ 171.7 of 

this subchapter). Test of type 3(c) is not re-
quired. 

197

The nitrocellulose must meet the cri-

teria of the Bergmann-Junk test or methyl 
violet paper test in the UN Manual of Tests 
and Criteria, Appendix 10 (IBR, 

see 

§ 171.7 of 

this subchapter). 

198

Nitrocellulose solutions containing not 

more than 20% nitrocellulose may be 
transported as paint, perfumery products, 
or printing ink, as applicable, provided the 
nitrocellulose contains no more 12.6% ni-
trogen (by dry mass). 

See 

UN1210, UN1263, 

UN1266, UN3066, UN3469, and UN3470. 

200

Division 1.4G consumer fireworks may 

be certified for transportation by a DOT- 
approved Fireworks Certification Agency 
in accordance with the provisions of § 173.65 
of this subchapter. 

237

‘‘Batteries, dry, containing potassium 

hydroxide solid, 

electric storage’’ 

must be 

prepared and packaged in accordance with 

the requirements of § 173.159(a) and (c). For 
transportation by aircraft, the provisions 
of § 173.159(b)(2) apply. This entry may only 
be used for the transport of non-activated 
batteries that contain dry potassium hy-
droxide and that are intended to be acti-
vated prior to use by the addition of an ap-
propriate amount of water to the indi-
vidual cells. 

238

Neutron radiation detectors: Neutron 

radiation detectors containing non-pres-
surized boron trifluoride gas in excess of 1 
gram (0.035 ounces) and radiation detection 
systems containing such neutron radiation 
detectors as components may be trans-
ported by highway, rail, vessel, or cargo 
aircraft in accordance with the following: 
a. Each radiation detector must meet the 

following conditions: 

(1) The pressure in each neutron radiation 

detector must not exceed 105 kPa abso-
lute at 20 

°

C (68 

°

F); 

(2) The amount of gas must not exceed 13 

grams (0.45 ounces) per detector; and 

(3) Each neutron radiation detector must 

be of welded metal construction with 
brazed metal to ceramic feed through as-
semblies. These detectors must have a 
minimum burst pressure of 1800 kPa as 
demonstrated by design type qualifica-
tion testing; and 

(4) Each detector must be tested to a 1 

× 

10

¥

10

cm

3

/s leaktightness standard before 

filling. 

b. Radiation detectors transported as indi-

vidual components must be transported 
as follows: 

(1) They must be packed in a sealed inter-

mediate plastic liner with sufficient ab-
sorbent or adsorbent material to absorb 
or adsorb the entire gas contents. 

(2) They must be packed in strong outer 

packagings and the completed package 
must be capable of withstanding a 1.8 
meter (5.9 feet) drop without leakage of 
gas contents from detectors. 

(3) The total amount of gas from all detec-

tors per outer packaging must not exceed 
52 grams (1.83 ounces). 

c. Completed neutron radiation detection 

systems containing detectors meeting 
the conditions of paragraph a of this spe-
cial provision must be transported as fol-
lows: 

(1) The detectors must be contained in a 

strong sealed outer casing; 

(2) The casing must contain include suffi-

cient absorbent or adsorbent material to 
absorb or adsorb the entire gas contents; 

(3) The completed system must be packed 

in strong outer packagings capable of 
withstanding a 1.8 meter (5.9 feet) drop 
test without leakage unless a system’s 
outer casing affords equivalent protec-
tion. 

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364 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

d. Except for transportation by aircraft, 

neutron radiation detectors and radi-
ation detection systems containing such 
detectors transported in accordance with 
paragraph a of this special provision are 
not subject to the labeling and 
placarding requirements of part 172 of 
this subchapter. 

e. When transported by highway, rail, ves-

sel, or as cargo on an aircraft, neutron 
radiation detectors containing not more 
than 1 gram of boron trifluoride, includ-
ing those with solder glass joints are not 
subject to any other requirements of this 
subchapter provided they meet the re-
quirements in paragraph a of this special 
provision and are packed in accordance 
with paragraph b of this special provi-
sion. Radiation detection systems con-
taining such detectors are not subject to 
any other requirements of this sub-
chapter provided they are packed in ac-
cordance with paragraph c of this special 
provision. 

325

In the case of non-fissile or fissile-ex-

cepted uranium hexafluoride, the material 
must be classified under UN 2978. 

328

When lithium metal or lithium ion bat-

teries are contained in the fuel cell system, 
the item must be described under this 
entry and the appropriate entries for 
‘‘Lithium metal batteries contained in 
equipment’’ or ‘‘Lithium ion batteries con-
tained in equipment’’. 

332

Magnesium nitrate hexahydrate is not 

subject to the requirements of this sub-
chapter. 

335

Mixtures of solids that are not subject 

to this subchapter and environmentally 
hazardous liquids or solids may be classi-
fied as ‘‘Environmentally hazardous sub-
stances, solid, n.o.s,’’ UN3077 and may be 
transported under this entry, provided 
there is no free liquid visible at the time 
the material is loaded or at the time the 
packaging or transport unit is closed. Each 
transport unit must be leakproof when 
used as bulk packaging. 

336

The use of UN1H1 drums, UN3H1 

jerricans, and UN6HA1 composite pack-
agings which meet the requirements of 
part 178 of the HMR at the Packing Group 
I or II performance level. These packagings 
are not required to: (1.) meet the venting 
requirements in § 173.24(g) or (2.) be marked 
with the hydrostatic pressure test marking 
specified in § 173.24a(b)(4). Shipment of 
packages under this special provision must 
be made by private or contract motor car-
rier. Transportation of these packages also 
requires the door of each van trailer to be 
marked with ‘‘Warning trailer may contain 
chemical vapor. Do not enter until vapors 
have dissipated.’’ The driver of the trans-
port vehicle and the consignee(s) must be 
trained not to enter the transport vehicle 
until the ammonia vapors have dissipated, 

and the emergency response information 
on the shipping paper must indicate that 
the vehicle contains ammonia vapors. This 
training must be documented in training 
records required by § 172.704(d). Transport 
vehicles must be vented to prevent accu-
mulation of vapors at a poisonous or flam-
mable concentration. 

337

Authorizes the use of regulated waste 

containers manufactured prior to October 
1, 2006 to be marked with the alternative 
shipping name of Regulated medical waste, 
UN3291 and arrows that deviate as pre-
scribed in § 172.312(a)(2) in that they may be 
black or white. 

338

Life Saving appliances, self-inflating 

transported by motor vehicle only between 
an U.S. Coast Guard approved inflatable 
life raft servicing facility and a vessel are 
only subject to the following requirements: 
a. Prior to repacking into the life-saving 

appliance, an installed inflation cylinder 
must successfully meet and pass all in-
spection and test criteria and standards 
of the raft manufacturer and the vessel 
Flag State requirements for cylinders in-
stalled as part of life-saving appliances, 
self-inflating (UN2990) used on marine 
vessels. Additionally, each cylinder must 
be visually inspected in accordance with 
CGA pamphlet, CGA C–6 (incorporated by 
reference, see § 171.7). A current copy of 
CGA pamphlet, CGA C–6 must be avail-
able at the facility servicing the life-sav-
ing appliance. 

b. An installed inflation cylinder that re-

quires recharging must be filled in ac-
cordance with § 173.301(l). 

c. Every installed inflation cylinder, as as-

sociated equipment of the life-saving ap-
pliance, must be packed within the pro-
tective packaging of the life raft and the 
life raft itself must otherwise be in com-
pliance with § 173.219. 

d. The serial number for each cylinder 

must be recorded as part of the life-sav-
ing appliance service record by the U.S. 
Coast Guard-approved servicing facility. 

340

This entry applies only to the vessel 

transportation of nickel-metal hydride 
batteries as cargo. Nickel-metal hydride 
button cells or nickel-metal hydride cells 
or batteries packed with or contained in 
battery-powered devices transported by 
vessel are not subject to the requirements 
of this special provision. 

See 

‘‘Batteries, 

dry, sealed, n.o.s.’’ in the § 172.101 Haz-
ardous Materials Table (HMT) of this part 
for transportation requirements for nickel- 
metal hydride batteries transported by 
other modes and for nickel-metal hydride 
button cells or nickel-metal hydride cells 
or batteries packed with or contained in 
battery-powered devices transported by 
vessel. Nickel-metal hydride batteries sub-
ject to this special provision are subject 
only to the following requirements: (1) The 

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365 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

batteries must be prepared and packaged 
for transport in a manner to prevent a dan-
gerous evolution of heat, short circuits, 
and damage to terminals; and are subject 
to the incident reporting in accordance 
with § 171.16 of this subchapter if a fire, vio-
lent rupture, explosion or dangerous evo-
lution of heat (

i.e., 

an amount of heat suffi-

cient to be dangerous to packaging or per-
sonal safety to include charring of pack-
aging, melting of packaging, scorching of 
packaging, or other evidence) occurs as a 
direct result of a nickel metal hydride bat-
tery; and (2) when loaded in a cargo trans-
port unit in a total quantity of 100 kg gross 
mass or more, the shipping paper require-
ments of Subpart C of this part, the mani-
fest requirements of § 176.30 of this sub-
chapter, and the vessel stowage require-
ments assigned to this entry in Column 
(10) of the § 172.101 Hazardous Materials 
Table. 

342 Glass inner packagings (such as ampoules 

or capsules) intended only for use in steri-
lization devices, when containing less than 
30 mL of ethylene oxide per inner pack-
aging with not more than 300 mL per outer 
packaging, may be transported in accord-
ance with § 173.4a of this subchapter, irre-
spective of the restriction of § 173.4a(b) and 
the indication of ‘‘forbidden’’ in columns 
(9A) and (9B) of the § 172.101 table provided 
that: 
a. After filling, each glass inner packaging 

must be determined to be leak-tight by 
placing the glass inner packaging in a 
hot water bath at a temperature and for 
a period of time sufficient to ensure that 
an internal pressure equal to the vapor 
pressure of ethylene oxide at 55 

°

C is 

achieved. Any glass inner packaging 
showing evidence of leakage, distortion 
or other defect under this test must not 
be transported under the terms of this 
special provision; 

b. In addition to the packaging required in 

§ 173.4a, each glass inner packaging must 
be placed in a sealed plastic bag compat-
ible with ethylene oxide and capable of 
containing the contents in the event of 
breakage or leakage of the glass inner 
packaging; and 

c. Each glass inner packaging is protected 

by a means of preventing puncture of the 
plastic bag (

e.g., 

sleeves or cushioning) in 

the event of damage to the packaging 
(

e.g., 

by crushing). 

343

A bulk packaging that emits hydrogen 

sulfide in sufficient concentration that va-
pors evolved from the sour crude oil can 
present an inhalation hazard must be 
marked as specified in § 172.327. 

345

‘‘Nitrogen, refrigerated liquid (

cryogenic 

liquid

), UN1977’’ transported in open cryo-

genic receptacles with a maximum capac-
ity of 1 L are not subject to the require-
ments of this subchapter. The receptacles 

must be constructed with glass double 
walls having the space between the walls 
vacuum insulated and each receptacle 
must be transported in an outer packaging 
with sufficient cushioning and absorbent 
materials to protect the receptacle from 
damage. 

346

‘‘Nitrogen, refrigerated liquid (

cryogenic 

liquid

), UN1977’’ transported in accordance 

with the requirements for open cryogenic 
receptacles in § 173.320 and this special pro-
vision are not subject to any other require-
ments of this subchapter. The receptacle 
must contain no hazardous materials other 
than the liquid nitrogen which must be 
fully absorbed in a porous material in the 
receptacle. 

347

Effective July 1, 2011, for transportation 

by aircraft, this entry may only be used if 
the results of Test series 6(d) of Part I of 
the UN Manual of Tests and Criteria (IBR, 

see 

§ 171.7 of this subchapter) have dem-

onstrated that any hazardous effects from 
accidental functioning are confined to 
within the package. Effective January 1, 
2012, for transportation by vessel, this 
entry may only be used if the results of 
Test Series 6(d) of Part I of the UN Manual 
of Tests and Criteria (IBR, 

see 

§ 171.7 of this 

subchapter) have demonstrated that any 
hazardous effects from accidental func-
tioning are confined to within the package. 
Effective January 1, 2014, for transpor-
tation domestically by highway or rail, 
this entry may only be used if the results 
of Test Series 6(d) of Part I of the UN Man-
ual of Tests and Criteria (IBR, 

see 

§ 171.7 of 

this subchapter) have demonstrated that 
any hazardous effects from accidental 
functioning are confined to within the 
package. Testing must be performed or 
witnessed by a person who is approved by 
the Associate Administrator (

see 

§ 173.56(b) 

of this subchapter). All successfully con-
ducted tests or reassignment to another 
compatibility group require the issuance of 
a new or revised approval by the Associate 
Administrator prior to transportation on 
or after the dates specified for each author-
ized mode of transport in this special pro-
vision. 

349

Mixtures of hypochlorite with an ammo-

nium salt are forbidden for transport. A 
hypochlorite solution, UN1791, is a Class 8 
corrosive material. 

350

Ammonium bromate, ammonium bro-

mate aqueous solutions, and mixtures of a 
bromate with an ammonium salt are for-
bidden for transport. 

351

Ammonium chlorate, ammonium chlo-

rate aqueous solutions, and mixtures of a 
chlorate with an ammonium salt are for-
bidden for transport. 

352

Ammonium chlorite, ammonium chlo-

rite aqueous solutions, and mixtures of a 
chlorite with an ammonium salt are for-
bidden for transport. 

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366 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

353

Ammonium permanganate, ammonium 

permanganate aqueous solutions, and mix-
tures of a permanganate with an ammo-
nium salt are forbidden for transport. 

357

A bulk packaging that emits hydrogen 

sulfide in sufficient concentration that va-
pors evolved from the crude oil can present 
an inhalation hazard must be marked as 
specified in § 172.327 of this part. 

360

Vehicles powered only by lithium bat-

teries must be described using ‘‘UN3171, 
Battery-powered vehicle.’’ Lithium bat-
teries installed in a cargo transport unit, 
designed only to provide power external to 
the transport unit, must be described using 
‘‘UN3536, Lithium batteries installed in a 
cargo transport unit.’’ 

361

Capacitors with an energy storage ca-

pacity of 0.3 Wh or less are not subject to 
the requirements of this subchapter. En-
ergy storage capacity means the energy 
held by a capacitor, as calculated using the 
nominal voltage and capacitance. This 
entry does not apply to capacitors that by 
design maintain a terminal voltage (e.g., 
asymmetrical capacitors.) 

362

This entry applies to liquids, pastes or 

powders, pressurized with a propellant that 
meets the definition of a gas in § 173.115. A 
chemical under pressure packaged in an 
aerosol dispenser must be transported 
under UN1950. The chemical under pressure 
must be classed based on the hazard char-
acteristics of the components in the pro-
pellant; the liquid; or the solid. The fol-
lowing provisions also apply: 
a. If one of the components, which can be 

a pure substance or a mixture, is classed 
as flammable, the chemical under pres-
sure must be classed as flammable in Di-
vision 2.1. Flammable components are 
flammable liquids and liquid mixtures, 
flammable solids and solid mixtures or 
flammable gases and gas mixtures meet-
ing the following criteria: 

(1) A flammable liquid is a liquid having a 

flashpoint of not more than 93 

°

C (200 

°

F); 

(2) A flammable solid is a solid that meets 

the criteria in § 173.124 of this subchapter; 
or 

(3) A flammable gas is a gas that meets the 

criteria in § 173.115 of this subchapter. 

b. Gases of Division 2.3 and gases with a 

subsidiary risk of 5.1 must not be used as 
a propellant in a chemical under pres-
sure. 

c. Where the liquid or solid components are 

classed as Division 6.1, Packing Group II 
or III, or Class 8, Packing Group II or III, 
the chemical under pressure must be as-
signed a subsidiary risk of Division 6.1 or 
Class 8 and the appropriate identification 
number must be assigned. Components 
classed as Division 6.1, Packing Group I, 
or Class 8, Packing Group I, must not be 
offered for transportation and trans-
ported under this description. 

d. A chemical under pressure with compo-

nents meeting the properties of: Class 1 
(explosives); Class 3 (liquid desensitized 
explosives); Division 4.1 (self-reactive 
substances and solid desensitized explo-
sives); Division 4.2 (substances liable to 
spontaneous combustion); Division 4.3 
(substances which, in contact with 
water, emit flammable gases or toxic 
gases); Division 5.1 (oxidizing sub-
stances); Division 5.2 (organic peroxides); 
Division 6.2 (Infectious substances); or, 
Class 7 (Radioactive material), must not 
be offered for transportation under this 
description. 

e. A description to which special provision 

170 or TP7 is assigned in Column 7 of the 
§ 172.101 Hazardous Materials Table, and 
therefore requires air to be eliminated 
from the package vapor space by nitro-
gen or other means, must not be offered 
for transportation under this description. 

f. Chemicals under pressure containing 

components forbidden for transport on 
both passenger and cargo aircraft in Col-
umns (9A) and (9B) of the § 172.101 Haz-
ardous Materials Table must not be 
transported by air. 

365

For manufactured instruments and arti-

cles containing mercury, see UN3506. 

367

For the purposes of documentation and 

package marking: 
a. The proper shipping name ‘‘Paint re-

lated material’’ may be used for consign-
ments of packages containing ‘‘Paint’’ 
and ‘‘Paint related material’’ in the same 
package; 

b. The proper shipping name ‘‘Paint re-

lated material, corrosive, flammable’’ 
may be used for consignments of pack-
ages containing ‘‘Paint, corrosive, flam-
mable’’ and ‘‘Paint related material, cor-
rosive, flammable’’ in the same package; 

c. The proper shipping name ‘‘Paint related 

material, flammable, corrosive’’ may be 
used for consignments of packages con-
taining ‘‘Paint, flammable, corrosive’’ 
and ‘‘Paint related material, flammable, 
corrosive’’ in the same package; and 

d. The proper shipping name ‘‘Printing ink 

related material’’ may be used for con-
signments of packages containing 
‘‘Printing ink’’ and ‘‘Printing ink related 
material’’ in the same package. 

368

In the case of non-fissile or fissile-ex-

cepted uranium hexafluoride, the material 
must be classified under UN3507 or UN2978. 

369

In the case of non-fissile or fissile-ex-

cepted uranium hexafluoride, the material 
must be classified under UN 2978. Uranium 
hexafluoride may be classified under this 
entry only if the conditions of 
§§ 173.420(a)(4) and (6) and (d) and 173.421(b) 
and (d) of this subchapter, and, for fissile- 
excepted material, the conditions of 
§ 173.453 of this subchapter are met. In addi-
tion to the provisions applicable to the 

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367 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

transport of Division 6.1 substances, the 
provisions of §§ 173.421(c) and 173.443(a) of 
this subchapter apply. In addition, pack-
ages shall be legibly and durably marked 
with an identification of the consignor, the 
consignee, or both. No Class 7 label is re-
quired to be displayed. The consignor shall 
be in possession of a copy of each applica-
ble certificate when packages include 
fissile material excepted by competent au-
thority approval. When a consignment is 
undeliverable, the consignment shall be 
placed in a safe location and the appro-
priate competent authority shall be in-
formed as soon as possible and a request 
made for instructions on further action. If 
it is evident that a package of radioactive 
material, or conveyance carrying 
unpackaged radioactive material, is leak-
ing, or if it is suspected that the package, 
or conveyance carrying unpackaged mate-
rial, may have leaked, the requirements of 
§ 173.443(e) of this subchapter apply. 

370

This entry also applies to ammonium 

nitrate with not more than 0.2% combus-
tible substances, including any organic 
substance calculated as carbon, to the ex-
clusion of any added substance, that gives 
a positive result when tested in accordance 
with Test Series 2 of the UN Manual of 
Tests and Criteria, Part I (IBR; see § 171.7 
of this subchapter). 

See also 

UN1942 in the 

§ 172.101 Hazardous Materials Table. This 
entry may not be used for ammonium ni-
trate for which a proper shipping name al-
ready exists in the § 172.101 Hazardous Ma-
terials Table, including ammonium nitrate 
mixed with fuel oil or any other commer-
cial grade of ammonium nitrate (

e.g., 

am-

monium nitrate fertilizer). 

371

a. This entry also applies to articles not 

conforming to the requirements of 
§§ 173.302, 173.304, or 173.306 of this sub-
chapter, containing a small pressure recep-
tacle with a release device. Such articles 
must comply with the following require-
ments: 
(1) The water capacity of the pressure re-

ceptacle must not exceed 0.5 L and the 
working pressure must not exceed 25 bar 
at 15 

°

C (59 

°

F); 

(2) The minimum burst pressure of the 

pressure receptacle must be at least four 
times the pressure of the gas at 15 

°

C (59 

°

F); 

(3) Each article must be manufactured in 

such a way that unintentional firing or 
release is avoided under normal condi-
tions of handling, packing, transport and 
use. This may be fulfilled by an addi-
tional locking device linked to the acti-
vator; 

(4) Each article must be manufactured in 

such a way as to prevent hazardous pro-
jections of the pressure receptacle or 
parts of the pressure receptacle; 

(5) Each pressure receptacle must be manu-

factured from material which will not 
fragment upon rupture; 

(6) The design type of the article must be 

subjected to a fire test. For this test, the 
provisions of paragraphs 16.6.1.2 except 
letter g, 16.6.1.3.1 to 16.6.1.3.6, 16.6.1.3.7(b) 
and 16.6.1.3.8 of the UN Manual of Tests 
and Criteria must be applied. It must be 
demonstrated that the article relieves its 
pressure by means of a fire degradable 
seal or other pressure relief device, in 
such a way that the pressure receptacle 
will not fragment and that the article or 
fragments of the article do not rocket 
more than 10 meters; and 

(7) The design type of the article must be 

subjected to the following test. A stimu-
lating mechanism must be used to ini-
tiate one article in the middle of the 
packaging. There must be no hazardous 
effects outside the package such as dis-
ruption of the package, metal fragments 
or a receptacle which passes through the 
packaging. 

b. The manufacturer must produce tech-

nical documentation of the design type, 
manufacture as well as the tests and 
their results. The manufacturer must 
apply procedures to ensure that articles 
produced in series are made of good qual-
ity, conform to the design type and are 
able to meet the requirements in (a). The 
manufacturer must provide such infor-
mation to a representative of the Depart-
ment upon request. 

372

This entry applies to asymmetric ca-

pacitors with an energy storage capacity 
greater than 0.3 Wh. Capacitors with an en-
ergy storage capacity of 0.3 Wh or less are 
not subject to the requirements of this 
subchapter. 
Energy storage capacity means the energy 

stored in a capacitor, as calculated ac-
cording to the following equation, 

Wh = 1/2C

N

(U

R

2

¥

U

L

2

× 

(1/3600) 

Using the nominal capacitance (C

N

), rated 

voltage (U

R

) and the rated lower limit 

voltage (U

L

). 

Nickel-carbon asymmetric capacitors con-

taining Class 8 alkaline electrolytes 
must be transported as UN2795, Bat-
teries, wet, filled with alkali, electric 
storage. 

379

When offered for transport by highway, 

rail, or cargo vessel, anhydrous ammonia 
adsorbed or absorbed on a solid contained 
in ammonia dispensing systems or recep-
tacles intended to form part of such sys-
tems is not subject to the requirements of 
this subchapter if the following conditions 
in this provision are met. In addition to 
meeting the conditions in this provision, 
transport on cargo aircraft only may be 
authorized with prior approval of the Asso-
ciate Administrator. 

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368 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

a. The adsorption or absorption presents 

the following properties: 

(1) The pressure at a temperature of 20 

°

(68 

°

F) in the receptacle is less than 0.6 

bar (60 kPa); 

(2) The pressure at a temperature of 35 

°

(95 

°

F) in the receptacle is less than 1 bar 

(100 kPa); 

(3) The pressure at a temperature of 85 

°

(185 

°

F) in the receptacle is less than 12 

bar (1200 kPa). 

b. The adsorbent or absorbent material 

shall not meet the definition or criteria 
for inclusion in Classes 1 to 8; 

c. The maximum contents of a receptacle 

shall be 10 kg of ammonia; and 

d. Receptacles containing adsorbed or ab-

sorbed ammonia shall meet the following 
conditions: 

(1) Receptacles shall be made of a material 

compatible with ammonia as specified in 
ISO 11114–1:2012(E) and ISO 11114–1:2012/ 
Amd 1:2017(E) (IBR, 

see 

§ 171.7 of this sub-

chapter); 

(2) Receptacles and their means of closure 

shall be hermetically sealed and able to 
contain the generated ammonia; 

(3) Each receptacle shall be able to with-

stand the pressure generated at 85 

°

C (185 

°

F) with a volumetric expansion no 

greater than 0.1%; 

(4) Each receptacle shall be fitted with a 

device that allows for gas evacuation 
once pressure exceeds 15 bar (1500 kPa) 
without violent rupture, explosion or 
projection; and 

(5) Each receptacle shall be able to with-

stand a pressure of 20 bar (2000 kPa) with-
out leakage when the pressure relief de-
vice is deactivated. 

e. When offered for transport in an ammo-

nia dispenser, the receptacles shall be 
connected to the dispenser in such a way 
that the assembly is guaranteed to have 
the same strength as a single receptacle. 

f. The properties of mechanical strength 

mentioned in this special provision shall 
be tested using a prototype of a recep-
tacle and/or dispenser filled to nominal 
capacity, by increasing the temperature 
until the specified pressures are reached. 

g. The test results shall be documented, 

shall be traceable, and shall be made 
available to a representative of the De-
partment upon request. 

380

For transportation by private carrier in 

a motor carrier only, this material is not 
subject to the segregation requirements of 
§ 177.848(d) of this subchapter under the fol-
lowing conditions: 
a. The material is packaged in a DOT Spec-

ification 4BW240 cylinder, or in a DOT–51 
portable tank. 

b. The material may only be loaded with 

Class 3, Class 8, and Division 4.1 mate-
rials in Packing Group II or III. 

c. The motor carrier must maintain a sat-

isfactory safety rating as prescribed in 49 
CFR part 385. 

381

For railroad flagging kits, see § 173.184 

(c) of this subchapter. 

382

Packages containing toy plastic or 

paper caps for toy pistols described as 
‘‘UN0349, Articles, explosive, n.o.s. (Toy 
caps), 1.4S’’ or ‘‘NA0337, Toy caps, 1.4S’’ are 
not subject to the subpart E (labeling) re-
quirements of this part when offered for 
transportation by motor vehicle, rail 
freight, cargo vessel, and cargo aircraft 
and, notwithstanding the packing method 
assigned in § 173.62 of this subchapter, in 
conformance with the following condi-
tions: 
a. The toy plastic or paper caps must be in 

the form of sheets, strips, rolls, or indi-
vidual caps; 

b. The caps must not contain more than an 

average of twenty-five hundredths of a 
grain of explosive composition per cap; 

c. The caps must be packed inside pack-

agings constructed of cardboard not less 
than 0.013-inch in thickness, metal not 
less than 0.008-inch in thickness, non- 
combustible plastic not less than 0.015- 
inch in thickness, or a composite blister 
package consisting of cardboard not less 
than 0.013-inch in thickness and non- 
combustible plastic not less than 0.005- 
inch in thickness that completely en-
closes the caps; 

d. The minimum dimensions of each side 

and each end of the cardboard packaging 
must be 1/8th inch in height or more; 

e. The number of caps inside each pack-

aging must be limited so that not more 
than 10 grains of explosives composition 
may be packed into one cubic inch of 
space, and not more than 17.5 grains of 
the explosive composition of toy caps 
may be packed in any inner packaging; 

f. Inner packagings must be packed in 

outer packagings meeting PG II perform-
ance criteria; 

g. Toy caps may be packed with non-explo-

sive or non-flammable articles provided 
the outer packagings are marked as pre-
scribed in this paragraph; 

h. Toy paper caps of any kind must not be 

packed in the same packaging with fire-
works; 

i. The outside of each package must be 

plainly marked ‘‘ARTICLES, EXPLO-
SIVES, N.O.S. (TOY CAPS)—HANDLE 
CAREFULLY’’ OR ‘‘TOY CAPS—HAN-
DLE CAREFULLY’’; and 

j. Explosives shipped in conformance with 

this paragraph must have been examined 
in accordance with § 173.56 of this sub-
chapter and approved by the Associate 
Administrator. 

383

For transportation by motor vehicle, 

substances meeting the conditions for high 
viscosity flammable liquids as prescribed 

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369 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

in § 173.121(b)(1)(i), (b)(1)(ii), and (b)(1)(iv) of 
this subchapter, may be reassigned to 
Packing Group III under the following con-
ditions: 
a. Packaging must be UN standard metal 

drums attached with heavy duty steel 
strapping to a pallet; and 

b. The capacity of each drum must not ex-

ceed 220 L (58 gallons). 

384

For green graphite electrodes and 

shapes that are large single component 
solid objects not subject to shifting, trans-
port in open rail flat cars, open bed motor 
vehicles, and intermodal containers is also 
authorized. The objects must be secured to 
the flat car, motor vehicle, intermodal 
container, or unitized by steel banding to 
wooden runners or pallets and the units se-
cured to the flat car, motor vehicle, or 
freight container to prevent shifting, in-
cluding relative motion between the ob-
jects, under conditions normally incident 
to transportation. Stacking is permitted 
two or more levels high to achieve max-
imum allowable utilization of the des-
ignated vehicle, rail car weight, or inter-
modal freight container weight or vessel 
hold volume. 

385

Notwithstanding the provisions of 

§ 177.834(l) of this subchapter, cargo heaters 
may be used when weather conditions are 
such that the freezing of a wetted explosive 
material is likely. Shipments must be 
made by private, leased or contract carrier 
vehicles under exclusive use of the offeror. 
Cargo heaters must be reverse refrigera-
tion (heat pump) units. Shipments made in 
accordance with this Special provision are 
excepted from the requirements of 
§ 173.60(b)(4) of this subchapter. 

386

When transported by private motor car-

rier only, the following corrosive liquids 
may be packaged in polyethylene bottles 
with a capacity no greater than 3.785 L 
(one gallon), further packed inside an 
open-top, heavy wall, high density poly-
ethylene box (

i.e., 

crate) in a manner that 

the polyethylene bottles are not subjected 
to any superimposed weight, and the boxes 
must be reasonably secured against shift-
ing within the transport vehicle and loaded 
so as to minimize the possibility of coming 
in contact with other lading: 

Compounds, cleaning liquid, NA1760, PG II 

or III; 

Corrosive liquid, acidic, inorganic, n.o.s., 

UN3264, PG II; 

Corrosive liquid, acidic, organic, n.o.s., 

UN3265, PG III; 

Corrosive liquid, basic, inorganic, n.o.s., 

UN3266, PG II; 

Hypochlorite solutions, UN1791, PG III; 
Hydrochloric acid solution, UN1789, PG II; 

and 

Sulfuric acid, UN2796, PG II. 

a. No more than four bottles, securely 

closed with threaded caps, may be 
packed in each box. 

b. Each empty bottle must have a min-

imum weight of not less than 140 grams 
and a minimum wall thickness of not 
less than 0.020 inch (0.508 mm). 

c. The completed package must meet the 

Packing Group II performance level, as 
applicable for combination packagings 
with a plastic box outer packaging, in ac-
cordance with subpart M of part 178 of 
this subchapter. 

(i) Tests must be performed on each type 

and size of bottle, for each manufac-
turing location. Samples taken at ran-
dom must withstand the prescribed tests 
without breakage or leakage. 

(ii) One bottle for every two hours of pro-

duction, or for every 2,500 bottles pro-
duced, must be tested by dropping a bot-
tle filled to 98 percent capacity with 
water from a height of 1.2 meters (3.9 
feet) onto solid concrete directly on the 
closure. 

(iii) A copy of the test results must be kept 

on file at each facility where packagings 
are offered for transportation, and must 
be made available to a representative of 
the Department upon request. 

(iv) The name or symbol of the bottle pro-

ducer, and the month and year of manu-
facture, must be marked by embossing, 
ink-jet printing of permanent ink, or 
other permanent means on the face or 
bottom of each bottle, in letters and 
numbers at least 6 mm (0.2 inch) high. 
Symbols, if used, must be registered with 
the Associate Administrator. 

(v) The box must be constructed from high- 

density polyethylene in the density 
range 0.950–0.962, and be capable of hold-
ing liquid when in the upright position. 

387

When materials are stabilized by tem-

perature control, the provisions of 
§ 173.21(f) of this subchapter apply. When 
chemical stabilization is employed, the 
person offering the material for transport 
shall ensure that the level of stabilization 
is sufficient to prevent the material as 
packaged from dangerous polymerization 
at 50 

°

C(122 

°

F). If chemical stabilization 

becomes ineffective at lower temperatures 
within the anticipated duration of trans-
port, temperature control is required and 
is forbidden by aircraft. In making this de-
termination factors to be taken into con-
sideration include, but are not limited to, 
the capacity and geometry of the pack-
aging and the effect of any insulation 
present, the temperature of the material 
when offered for transport, the duration of 
the journey, and the ambient temperature 
conditions typically encountered in the 
journey (considering also the season of 

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370 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

year), the effectiveness and other prop-
erties of the stabilizer employed, applica-
ble operational controls imposed by regu-
lation (

e.g., 

requirements to protect from 

sources of heat, including other cargo car-
ried at a temperature above ambient) and 
any other relevant factors. The provisions 
of this special provision will be effective 
until January 2, 2023, unless we terminate 
them earlier or extend them beyond that 
date by notice of a final rule in the F

ED

-

ERAL

R

EGISTER

388

a. Lithium batteries containing both 

primary lithium metal cells and recharge-
able lithium ion cells that are not designed 
to be externally charged, must meet the 
following conditions: 
i. The rechargeable lithium ion cells can 

only be charged from the primary lith-
ium metal cells; 

ii. Overcharge of the rechargeable lithium 

ion cells is precluded by design; 

iii. The battery has been tested as a pri-

mary lithium battery; and 

iv. Component cells of the battery must be 

of a type proved to meet the respective 
testing requirements of the Manual of 
Tests and Criteria, part III, subsection 
38.3 (IBR, see § 171.7 of this subchapter). 

b. Lithium batteries conforming to para-

graph a. of this special provision must be 
assigned to UN Nos. 3090 or 3091, as ap-
propriate. When such batteries are trans-
ported in accordance with § 173.185(c), the 
total lithium content of all lithium 
metal cells contained in the battery 
must not exceed 1.5 g and the total ca-
pacity of all lithium ion cells contained 
in the battery must not exceed 10 Wh. 

389

This entry only applies to lithium ion 

batteries or lithium metal batteries in-
stalled in a cargo transport unit and de-
signed only to provide power external to 
the cargo transport unit. The lithium bat-
teries must meet the requirements of 
§ 173.185(a) and contain the necessary sys-
tems to prevent overcharge and over dis-
charge between the batteries. The bat-
teries must be securely attached to the in-
terior structure of the cargo transport unit 
(

e.g., 

by means of placement in racks, cabi-

nets, etc.) in such a manner as to prevent 
short circuits, accidental operation, and 
significant movement relative to the cargo 
transport unit under the shocks, loadings, 
and vibrations normally incident to trans-
port. Hazardous materials necessary for 
the safe and proper operation of the cargo 
transport unit (

e.g., 

fire extinguishing sys-

tems and air conditioning systems), must 
be properly secured to or installed in the 
cargo transport unit and are not otherwise 
subject to this subchapter. Hazardous ma-
terials not necessary for the safe and prop-
er operation of the cargo transport unit 
must not be transported within the cargo 
transport unit. The batteries inside the 

cargo transport unit are not subject to 
marking or labelling requirements of part 
172 subparts D and E of this subchapter. 
The cargo transport unit shall display the 
UN number in a manner in accordance 
with § 172.332 of this subchapter and be 
placarded on two opposing sides. For trans-
portation by aircraft, cargo transport 
units may only be offered for transpor-
tation and transported under conditions 
approved by the Associate Administrator. 

391

Except for articles being transported by 

motor vehicle as a material of trade in ac-
cordance with § 173.6 of this subchapter, ar-
ticles containing hazardous materials of 
Division 2.3, or Division 4.2, or Division 4.3, 
or Division 5.1, or Division 5.2, or Division 
6.1 (substances with an inhalation toxicity 
of Packing Group I) and articles con-
taining more than one of the following haz-
ards: (1) Gases of Class 2; (2) Liquid desen-
sitized explosives of Class 3; or (3) Self-re-
active substances and solid desensitized ex-
plosives of Division 4.1, may only be of-
fered for transportation and transported 
under conditions approved by the Asso-
ciate Administrator. 

420

This entry does not apply to manufac-

tured articles (such as table tennis balls). 

421

This entry will no longer be effective on 

January 2, 2023, unless we terminate it ear-
lier or extend it beyond that date by notice 
of a final rule in the F

EDERAL

R

EGISTER

422

When labelling is required, the label to 

be used must be the label shown in § 172.447. 
When a placard is displayed, the placard 
must be the placard shown in § 172.560. 

430

This entry shall only be used for solid 

medical waste of Category A transported 
for disposal. 

440

When this material is transported by 

tank car, the offeror must ensure each 
tank car is remotely monitored for pres-
sure and location. Additionally, the offeror 
must notify the carrier if the tank pres-
sure rise exceeds 3 psig over any 24-hour 
period. 

441

For marine pollutants transported 

under ‘‘UN3077, Environmentally haz-
ardous substance, solid, n.o.s.’’ or ‘‘UN3082, 
Environmentally hazardous substance, liq-
uid, n.o.s.’’ and for purposes of shipping 
paper and package marking requirements, 
the technical name used in association 
with the basic description may be a proper 
shipping name listed in the § 172.101 Haz-
ardous Material Table; provided that the 
name chosen is not also an entry that in-
cludes ‘‘n.o.s.’’ as a part of the name or one 
that has a ‘‘G’’ in column (1) of the table. 

(2) 

‘‘A’’ codes. 

These provisions apply 

only to transportation by aircraft: 

Code/Special Provisions 

A1

Single packagings are not permitted on 

passenger aircraft. 

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371 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

A2

Single packagings are not permitted on 

aircraft. 

A3

For combination packagings, if glass 

inner packagings (including ampoules) are 
used, they must be packed with absorbent 
material in tightly closed rigid and leak-
proof receptacles before packing in outer 
packagings. 

A4

Liquids having an inhalation toxicity of 

Packing Group I are not permitted on air-
craft. 

A5

Solids having an inhalation toxicity of 

Packing Group I are not permitted on pas-
senger aircraft and may not exceed a max-
imum net quantity per package of 15 kg (33 
pounds) on cargo aircraft. 

A6

For combination packagings, if plastic 

inner packagings are used, they must be 
packed in tightly closed metal receptacles 
before packing in outer packagings. 

A7

Steel packagings must be corrosion-re-

sistant or have protection against corro-
sion. 

A8

For combination packagings, if glass 

inner packagings (including ampoules) are 
used, they must be packed with cushioning 
material in tightly closed metal recep-
tacles before packing in outer packagings. 

A9

For combination packagings, if plastic 

bags are used, they must be packed in 
tightly closed metal receptacles before 
packing in outer packagings. 

A10

When aluminum or aluminum alloy 

construction materials are used, they must 
be resistant to corrosion. 

A11

For combination packagings, when 

metal inner packagings are permitted, 
only specification cylinders constructed of 
metals which are compatible with the haz-
ardous material may be used. 

A13

Bulk packagings are not authorized for 

transportation by aircraft. 

A14

This material is not authorized to be 

transported as a limited quantity or con-
sumer commodity in accordance with 
§ 173.306 of this subchapter when trans-
ported aboard an aircraft. 

A19

Combination packagings consisting of 

outer fiber drums or plywood drums, with 
inner plastic packagings, are not author-
ized for transportation by aircraft. 

A20

Plastic bags as inner receptacles of 

combination packagings are not authorized 
for transportation by aircraft. 

A29

Combination packagings consisting of 

outer expanded plastic boxes with inner 
plastic bags are not authorized for trans-
portation by aircraft. 

A30

Ammonium permanganate is not au-

thorized for transportation on aircraft. 

A34

Aerosols containing a corrosive liquid 

in Packing Group II charged with a gas are 
not permitted for transportation by air-
craft. 

A35

This includes any material which is not 

covered by any of the other classes but 
which has an anesthetic, narcotic, noxious 

or other similar properties such that, in 
the event of spillage or leakage on an air-
craft, extreme annoyance or discomfort 
could be caused to crew members so as to 
prevent the correct performance of as-
signed duties. 

A37

This entry applies only to a material 

meeting the definition in § 171.8 of this sub-
chapter for self-defense spray. 

A51

For aircraft batteries, irrespective of 

the quantity limitations specified in Col-
umn (9A) of the § 172.101 Table or § 175.75(c), 
wet cell batteries, UN2794 or UN2795, up to 
a limit of 100 kg net mass per package may 
be transported aboard passenger aircraft. 
Transport in accordance with this special 
provision must be noted on the shipping 
paper. 

A53

Refrigerating machines and refrig-

erating machine components are not sub-
ject to the requirements of this subchapter 
when containing less than 12 kg (26.4 
pounds) of a non-flammable gas or when 
containing 12 L (3 gallons) or less of ammo-
nia solution (UN2672) (see § 173.307 of this 
subchapter). 

A54

Irrespective of the quantity limits in 

Column 9B of the § 172.101 table, a lithium 
battery, including a lithium battery 
packed with, or contained in, equipment 
that otherwise meets the applicable re-
quirements of § 173.185, may have a mass 
exceeding 35 kg if approved by the Asso-
ciate Administrator prior to shipment. 

A56

Radioactive material with a subsidiary 

hazard of Division 4.2, Packing Group I, 
must be transported in Type B packages 
when offered for transportation by air-
craft. Where the subsidiary hazard mate-
rial is ‘‘Forbidden’’ in column (9A) or (9B) 
of the § 172.101 Table, the radioactive mate-
rial may only be offered for transportation 
and transported by aircraft under condi-
tions approved by the Associate Adminis-
trator. 

A60

Sterilization devices, when containing 

less than 30 mL per inner packaging with 
not more than 150 mL per outer packaging, 
may be transported in accordance with the 
provisions in § 173.4a, irrespective of 
§ 173.4a(b), provided such packagings were 
first subjected to comparative fire testing. 
Comparative fire testing between a pack-
age as prepared for transport (including 
the substance to be transported) and an 
identical package filled with water must 
show that the maximum temperature 
measured inside the packages during test-
ing does not differ by more than 200 

°

C (392 

°

F). Packagings may include a vent to per-

mit the slow escape of gas (

i.e. 

not more 

than 0.1 mL/hour per 30 mL inner pack-
aging at 20 

°

C (68 

°

F) produced from grad-

ual decomposition. The requirements of 
§§ 173.24(g)(1) and 173.27(c) do not apply. 

A61 a. When used for purposes such as steri-

lization, inner packagings of peroxyacetic 

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372 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

acid, stabilized, classified as UN 3107 Or-
ganic peroxide type E, liquid or UN 3109 Or-
ganic peroxide type F, liquid may be fitted 
with a vent consisting of hydrophobic 
membrane, provided: 
(1) Each inner packaging contains not 

more than 70 mL; 

(2) The inner packaging is designed so that 

the vent is not immersed in liquid in any 
orientation; 

(3) Each inner packaging is enclosed in an 

intermediate rigid plastic packaging 
with a small opening to permit release of 
gas and contains a buffer that neutral-
izes the contents of the inner packaging 
in the event of leakage; 

(4) Intermediate packagings are packed in 

a fiberboard box (4G) outer packaging; 

(5) Each outer packaging contains not 

more than 1.4 L of liquid; and 

(6) The rate of oxygen release from the 

outer packaging does not exceed 15 mL 
per hour. 

b. Such packages must be transported on 

cargo aircraft only. The requirements of 
§§ 173.24(g)(1) and 173.27(c) do not apply. 

A82

The quantity limits in columns (9A) 

and (9B) do not apply to human or animal 
body parts, whole organs or whole bodies 
known to contain or suspected of con-
taining an infectious substance. 

A100

Lithium ion cells and batteries must 

be offered for transport at a state of charge 
not exceeding 30 percent of their rated ca-
pacity. Lithium ion cells and batteries at a 
state of charge greater than 30 percent of 
their rated capacity may only be trans-
ported under conditions approved by the 
Associate Administrator in accordance 
with the requirements in 49 CFR part 107, 
subpart H. Guidance and methodology for 
determining the rated capacity can be 
found in sub-section 38.3.2.3 of the UN Man-
ual of Tests and Criteria (IBR, 

see 

§ 171.7 of 

this subchapter). 

A101

In addition to the applicable require-

ments of § 173.185, the quantity of lithium 
metal in the batteries contained in any 
piece of equipment must not exceed 12 g 
per cell and 500 g per battery. 

A105

a. This entry applies to machinery or 

apparatus containing hazardous materials 
as a residue or as an integral element of 
the machinery or apparatus. It must not be 
used for machinery or apparatus for which 
a proper shipping name already exists in 
the § 172.101 Table. 
b. Where the quantity of hazardous mate-

rials contained as an integral element in 
machinery or apparatus exceeds the lim-
its permitted by § 173.222(c)(2), and the 
hazardous materials meet the provisions 
of § 173.222(c), the machinery or appa-
ratus may be transported by aircraft 
only with the prior approval of the Asso-
ciate Administrator. 

A112

Notwithstanding the quantity limits 

shown in Column (9A) and (9B) for this 
entry, the following IBCs are authorized 
for transportation aboard passenger and 
cargo-only aircraft. Each IBC may not ex-
ceed a maximum net quantity of 1,000 kg: 
a. Metal: 11A, 11B, 11N, 21A, 21B and 21N 
b. Rigid plastics: 11H1, 11H2, 21H1 and 21H2 
c. Composite with plastic inner receptacle: 

11HZ1, 11HZ2, 21HZ1 and 21HZ2 

d. Fiberboard: 11G 
e. Wooden: 11C, 11D and 11F (with inner lin-

ers) 

f. Flexible: 13H2, 13H3, 13H4, 13H5, 13L2, 

13L3, 13L4, 13M1 and 13M2 (flexible IBCs 
must be sift-proof and water resistant or 
must be fitted with a sift-proof and water 
resistant liner). 

A189

Except where the defining criteria of 

another class or division are met, con-
centrations of formaldehyde solution: 
a. With less than 25 percent but not less 

than 10 percent formaldehyde, must be 
described as UN3334, Aviation regulated 
liquid, n.o.s.; and 

b. With less than 10 percent formaldehyde, 

are not subject to this subchapter. 

A191

Notwithstanding the Division 6.1 sub-

sidiary risk for this description, the toxic 
subsidiary risk label and the requirement 
to indicate the subsidiary risk on the ship-
ping paper are not required for manufac-
tured articles containing less than 5 kg (11 
pounds) of mercury. 

A200

These articles must be transported as 

cargo and may not be carried aboard an 
aircraft by passengers or crewmembers in 
carry-on baggage, checked baggage, or on 
their person unless specifically authorized 
in § 175.10. 

A210

This substance is forbidden for trans-

port by air. It may be transported on cargo 
aircraft only with the prior approval of the 
Associate Administrator. 

A212

‘‘UN 2031, Nitric acid

, other than red 

fuming, with more than 20% and less than 
65% nitric acid’’ 

intended for use in steri-

lization devices only, may be transported 
on passenger aircraft irrespective of the in-
dication of ‘‘forbidden’’ in columns (9A) of 
the § 172.101 table provided that: 
a. Each inner packaging contains not more 

than 30 mL; 

b. Each inner packaging is contained in a 

sealed leak-proof intermediate packaging 
with sufficient absorbent material capa-
ble of containing the contents of the 
inner packaging; 

c. Intermediate packagings are securely 

packed in an outer packaging of a type 
permitted by § 173.158(g) of this sub-
chapter which meet the requirements of 
part 178 of this subchapter at the Pack-
ing Group I performance level; 

d. The maximum quantity of nitric acid in 

the package does not exceed 300 mL; and 

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373 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

e. Transport in accordance with this spe-

cial provision must be noted on the ship-
ping paper. 

(3) 

‘‘B’’ codes. 

These provisions apply 

only to bulk packagings. Except as 
otherwise provided in this subchapter, 
these special provisions do not apply to 
UN portable tanks or IBCs: 

Code/Special Provisions 

B1

If the material has a flash point at or 

above 38 

°

C (100 

°

F) and below 93 

°

C (200 

°

F), 

then the bulk packaging requirements of 
§ 173.241 of this subchapter are applicable. 
If the material has a flash point of less 
than 38 

°

C (100 

°

F), then the bulk packaging 

requirements of § 173.242 of this subchapter 
are applicable. 

B2

MC 300, MC 301, MC 302, MC 303, MC 305, 

and MC 306 and DOT 406 cargo tanks are 
not authorized. 

B3

MC 300, MC 301, MC 302, MC 303, MC 305, 

and MC 306 and DOT 406 cargo tanks and 
DOT 57 portable tanks are not authorized. 

B4

MC 300, MC 301, MC 302, MC 303, MC 305, 

and MC 306 and DOT 406 cargo tanks are 
not authorized. 

B5

Only ammonium nitrate solutions with 

35 percent or less water that will remain 
completely in solution under all conditions 
of transport at a maximum lading tem-
perature of 116 

°

C (240 

°

F) are authorized 

for transport in the following bulk pack-
agings: MC 307, MC 312, DOT 407 and DOT 
412 cargo tanks with at least 172 kPa (25 
psig) design pressure. The packaging shall 
be designed for a working temperature of 
at least 121 

°

C (250 

°

F). Only Specifications 

MC 304, MC 307 or DOT 407 cargo tank 
motor vehicles are authorized for transpor-
tation by vessel. 

B6

Packagings shall be made of steel. 

B7

Safety relief devices are not authorized 

on multi-unit tank car tanks. Openings for 
safety relief devices on multi-unit tank car 
tanks shall be plugged or blank flanged. 

B8

Packagings shall be made of nickel, 

stainless steel, or steel with nickel, stain-
less steel, lead or other suitable corrosion 
resistant metallic lining. 

B9

Bottom outlets are not authorized. 

B10

MC 300, MC 301, MC 302, MC 303, MC 305, 

and MC 306 and DOT 406 cargo tanks, and 
DOT 57 portable tanks are not authorized. 

B11

Tank car tanks must have a test pres-

sure of at least 2,068.5 kPa (300 psig). Cargo 
and portable tanks must have a design 
pressure of at least 1,207 kPa (175 psig). 

B13

A nonspecification cargo tank motor 

vehicle authorized in § 173.247 of this sub-
chapter must be at least equivalent in de-
sign and in construction to a DOT 406 
cargo tank or MC 306 cargo tank (if con-
structed before August 31, 1995), except as 
follows: 

a. Packagings equivalent to MC 306 cargo 

tanks are excepted from the certifi-
cation, venting, and emergency flow re-
quirements of the MC 306 specification. 

b. Packagings equivalent to DOT 406 cargo 

tanks are excepted from §§ 178.345–7(d)(5), 
circumferential reinforcements; 178.345– 
10, pressure relief; 178.345–11, outlets; 
178.345–14, marking, and 178.345–15, cer-
tification. 

c. Packagings are excepted from the design 

stress limits at elevated temperatures, as 
described in Section VIII of the ASME 
Code (IBR, see § 171.7 of this subchapter). 
However, the design stress limits may 
not exceed 25 percent of the stress for 0 
temper at the maximum design tempera-
ture of the cargo tank, as specified in the 
Aluminum Association’s ‘‘Aluminum 
Standards and Data’’ (IBR, see § 171.7 of 
this subchapter). 

B14

Each bulk packaging, except a tank car 

or a multi-unit-tank car tank, must be in-
sulated with an insulating material so that 
the overall thermal conductance at 15.5 

°

(60 

°

F) is no more than 1.5333 kilojoules per 

hour per square meter per degree Celsius 
(0.075 Btu per hour per square foot per de-
gree Fahrenheit) temperature differential. 
Insulating materials must not promote 
corrosion to steel when wet. 

B15

Packagings must be protected with 

non-metallic linings impervious to the lad-
ing or have a suitable corrosion allowance. 

B16

The lading must be completely covered 

with nitrogen, inert gas or other inert ma-
terials. 

B18

Open steel hoppers or bins are author-

ized. 

B23

Tanks must be made of steel that is 

rubber lined or unlined. Unlined tanks 
must be passivated before being placed in 
service. If unlined tanks are washed out 
with water, they must be repassivated 
prior to return to service. Lading in un-
lined tanks must be inhibited so that the 
corrosive effect on steel is not greater than 
that of hydrofluoric acid of 65 percent con-
centration. 

B25

Packagings must be made from monel 

or nickel or monel-lined or nickel-lined 
steel. 

B26

Tanks must be insulated. Insulation 

must be at least 100 mm (3.9 inches) except 
that the insulation thickness may be re-
duced to 51 mm (2 inches) over the exterior 
heater coils. Interior heating coils are not 
authorized. The packaging may not be 
loaded with a material outside of the pack-
aging’s design temperature range. In addi-
tion, the material also must be covered 
with an inert gas or the container must be 
filled with water to the tank’s capacity. 
After unloading, the residual material also 
must be covered with an inert gas or the 
container must be filled with water to the 
tank’s capacity. 

background image

374 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

B27

Tanks must have a service pressure of 

1,034 kPa (150 psig). Tank car tanks must 
have a test pressure rating of 1,379 kPa (200 
psig). Lading must be blanketed at all 
times with a dry inert gas at a pressure not 
to exceed 103 kPa (15 psig). 

B28

Packagings must be made of stainless 

steel. 

B30

MC 312, MC 330, MC 331 and DOT 412 

cargo tanks and DOT 51 portable tanks 
must be made of stainless steel, except 
that steel other than stainless steel may 
be used in accordance with the provisions 
of § 173.24b(b) of this subchapter. Thickness 
of stainless steel for tank shell and heads 
for cargo tanks and portable tanks must be 
the greater of 7.62 mm (0.300 inch) or the 
thickness required for a tank with a design 
pressure at least equal to 1.5 times the 
vapor pressure of the lading at 46 

°

C (115 

°

F). In addition, MC 312 and DOT 412 cargo 

tank motor vehicles must: 
a. Be ASME Code (U) stamped for 100% ra-

diography of all pressure-retaining welds; 

b. Have accident damage protection which 

conforms with § 178.345–8 of this sub-
chapter; 

c. Have a MAWP or design pressure of at 

least 87 psig: and 

d. Have a bolted manway cover. 

B32

MC 312, MC 330, MC 331, DOT 412 cargo 

tanks and DOT 51 portable tanks must be 
made of stainless steel, except that steel 
other than stainless steel may be used in 
accordance with the provisions of 
§ 173.24b(b) of this subchapter. Thickness of 
stainless steel for tank shell and heads for 
cargo tanks and portable tanks must be 
the greater of 6.35 mm (0.250 inch) or the 
thickness required for a tank with a design 
pressure at least equal to 1.3 times the 
vapor pressure of the lading at 46 

°

C (115 

°

F). In addition, MC 312 and DOT 412 cargo 

tank motor vehicles must: 

a. Be ASME Code (U) stamped for 100% radi-

ography of all pressure-retaining welds; 

b. Have accident damage protection which 

conforms with § 178.345–8 of this sub-
chapter; 

c. Have a MAWP or design pressure of at 

least 87 psig; and 

d. Have a bolted manway cover. 
B33

MC 300, MC 301, MC 302, MC 303, MC 305, 

MC 306, and DOT 406 cargo tanks equipped 
with a 1 psig normal vent used to transport 
gasoline must conform to Table I of this 
Special Provision. Based on the volatility 
class determined by using ASTM D 439 and 
the Reid vapor pressure (RVP) of the par-
ticular gasoline, the maximum lading pres-
sure and maximum ambient temperature 
permitted during the loading of gasoline 
may not exceed that listed in Table I. 

T

ABLE

I—M

AXIMUM

A

MBIENT

T

EMPERATURE

— 

G

ASOLINE

 

ASTM D439 volatility class 

Maximum lading and 
ambient temperature 

(see note 1) 

A ........................................................

131 

°

(RVP 

≤ 

9.0 psia) 

B ........................................................

124 

°

(RVP 

≤ 

10.0 psia) 

C ........................................................

116 

°

(RVP 

≤ 

11.5 psia) 

D ........................................................

107 

°

(RVP 

≤ 

13.5 psia) 

E ........................................................

100 

°

(RVP 

≤ 

15.0 psia) 

N

OTE

1: Based on maximum lading pressure of 1 psig at 

top of cargo tank. 

B35

Tank cars containing hydrogen cyanide 

may be alternatively marked 
‘‘Hydrocyanic acid, liquefied’’ if otherwise 
conforming to marking requirements in 
subpart D of this part. Tank cars marked 
‘‘HYDROCYANIC ACID’’ prior to October 
1, 1991 do not need to be remarked. 

B42

Tank cars constructed before March 16, 

2009, must have a test pressure of 34.47 Bar 
(500 psig) or greater and conform to Class 
105J. Each tank car must have a reclosing 
pressure relief device having a start-to-dis-
charge pressure of 10.34 Bar (150 psig). The 
tank car specification may be marked to 
indicate a test pressure of 13.79 Bar (200 
psig). 

B44

All parts of valves and safety relief de-

vices in contact with lading must be of a 
material which will not cause formation of 
acetylides. 

B45

Each tank must have a reclosing com-

bination pressure relief device equipped 
with stainless steel or platinum rupture 
discs approved by the AAR Tank Car Com-
mittee. 

B46

The detachable protective housing for 

the loading and unloading valves of multi- 
unit tank car tanks must withstand tank 
test pressure and must be approved by the 
Associate Administrator. 

B47

Each tank may have a reclosing pres-

sure relief device having a start-to-dis-
charge pressure setting of 310 kPa (45 psig). 

B48

Portable tanks in sodium metal service 

may be visually inspected at least once 
every 5 years instead of being retested 
hydrostatically. Date of the visual inspec-
tion must be stenciled on the tank near 
the other required markings. 

B49

Tanks equipped with interior heater 

coils are not authorized. Single unit tank 
car tanks must have a reclosing pressure 
relief device having a start-to-discharge 
pressure set at no more than 1551 kPa (225 
psig). 

B52

Notwithstanding the provisions of 

§ 173.24b of this subchapter, non-reclosing 
pressure relief devices are authorized on 
DOT 57 portable tanks. 

background image

375 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

B53

Packagings must be made of either alu-

minum or steel. 

B54

Open-top, sift-proof rail cars are also 

authorized. 

B55

Water-tight, sift-proof, closed-top, 

metal-covered hopper cars, equipped with a 
venting arrangement (including flame ar-
restors) approved by the Associate Admin-
istrator are also authorized. 

B56

Water-tight, sift-proof, closed-top, 

metal-covered hopper cars are also author-
ized if the particle size of the hazardous 
material is not less than 149 microns. 

B57

Class 115A tank car tanks used to trans-

port chloroprene must be equipped with a 
non-reclosing pressure relief device of a di-
ameter not less than 305 mm (12 inches) 
with a maximum rupture disc pressure of 
310 kPa (45 psig). 

B59

Water-tight, sift-proof, closed-top, 

metal-covered hopper cars are also author-
ized provided that the lading is covered 
with a nitrogen blanket. 

B61

Written procedures covering details of 

tank car appurtenances, dome fittings, 
safety devices, and marking, loading, han-
dling, inspection, and testing practices 
must be approved by the Associate Admin-
istrator before any single unit tank car 
tank is offered for transportation. 

B65

Tank cars constructed before March 16, 

2009, must have a test pressure of 34.47 Bar 
(500 psig) or greater and conform to Class 
105A. Each tank car must have a reclosing 
pressure relief device having a start-to-dis-
charge pressure of 15.51 Bar (225 psig). The 
tank car specification may be marked to 
indicate a test pressure of 20.68 Bar (300 
psig). 

B66

Each tank must be equipped with gas 

tight valve protection caps. Outage must 
be sufficient to prevent tanks from becom-
ing liquid full at 55 

°

C (130 

°

F). Specifica-

tion 110A500W tanks must be stainless 
steel. 

B67

All valves and fittings must be pro-

tected by a securely attached cover made 
of metal not subject to deterioration by 
the lading, and all valve openings, except 
safety valve, must be fitted with screw 
plugs or caps to prevent leakage in the 
event of valve failure. 

B68

Sodium must be in a molten condition 

when loaded and allowed to solidify before 
shipment. Outage must be at least 5 per-
cent at 98 

°

C (208 

°

F). Bulk packagings 

must have exterior heating coils fusion 
welded to the tank shell which have been 
properly stress relieved. The only tank car 
tanks authorized are Class DOT 105 tank 
cars having a test pressure of 2,069 kPa (300 
psig) or greater. 

B69

Dry sodium cyanide or potassium cya-

nide may be shipped in the following sift- 
proof and weather-resistant packagings: 
metal covered hopper cars, covered motor 

vehicles, portable tanks, or non-specifica-
tion bins. 

B70

If DOT 103ANW tank car tank is used: 

All cast metal in contact with the lading 
must have 96.7 percent nickel content; and 
the lading must be anhydrous and free 
from any impurities. 

B76

Tank cars constructed before March 16, 

2009, must have a test pressure of 20.68 Bar 
(300 psig) or greater and conform to Class 
105S, 112J, 114J or 120S. Each tank car 
must have a reclosing pressure relief de-
vice having a start-to-discharge pressure of 
10.34 Bar (150 psig). The tank car specifica-
tion may be marked to indicate a test pres-
sure of 13.79 Bar (200 psig). 

B77

Other packaging are authorized when 

approved by the Associate Administrator. 

B78

Tank cars must have a test pressure of 

4.14 Bar (60 psig) or greater and conform to 
Class 103, 104, 105, 109, 111, 112, 114 or 120. 
Heater pipes must be of welded construc-
tion designed for a test pressure of 500 psig. 
A 25 mm (1 inch) woven lining of asbestos 
or other approved material must be placed 
between the bolster slabbing and the bot-
tom of the tank. If a tank car tank is 
equipped with a non-reclosing pressure re-
lief device, the rupture disc must be per-
forated with a 3.2 mm (0.13 inch) diameter 
hole. If a tank car tank is equipped with a 
reclosing pressure relief valve, the tank 
must also be equipped with a vacuum relief 
valve. 

B80

Each cargo tank must have a minimum 

design pressure of 276 kPa (40 psig). 

B81

Venting and pressure relief devices for 

tank car tanks and cargo tanks must be 
approved by the Associate Administrator. 

B82

Cargo tanks and portable tanks are not 

authorized. 

B83

Bottom outlets are prohibited on tank 

car tanks transporting sulfuric acid in con-
centrations over 65.25 percent. 

B84

Packagings must be protected with 

non-metallic linings impervious to the lad-
ing or have a suitable corrosion allowance 
for sulfuric acid or spent sulfuric acid in 
concentration up to 65.25 percent. 

B85

Cargo tanks must be marked with the 

name of the lading in accordance with the 
requirements of § 172.302(b). 

B90

Steel tanks conforming or equivalent 

to ASME specifications which contain 
solid or semisolid residual motor fuel anti-
knock mixture (including rust, scale, or 
other contaminants) may be shipped by 
rail freight or highway. The tank must 
have been designed and constructed to be 
capable of withstanding full vacuum. All 
openings must be closed with gasketed 
blank flanges or vapor tight threaded clo-
sures. 

B115

Rail cars, highway trailers, roll-on/ 

roll-off bins, or other non-specification 
bulk packagings are authorized. Pack-
agings must be sift-proof, prevent liquid 

background image

376 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

water from reaching the hazardous mate-
rial, and be provided with sufficient vent-
ing to preclude dangerous accumulation of 
flammable, corrosive, or toxic gaseous 
emissions such as methane, hydrogen, and 
ammonia. The material must be loaded 
dry. 

B116

The use of non specification, sift-proof 

dump or hopper type vehicles, and sift- 
proof roll-on/roll-off bulk bins, which must 
be covered by a tarpaulin, metal cover, or 
equivalent means is authorized for the 
transportation of spent bleaching earth by 
motor vehicle. The material is also be sub-
ject to operational controls which include 
not exceeding a temperature of 55C (130F) 
at the time it is offered or during transpor-
tation, not exceeding a transportation 
time of 24 hours, and drivers transporting 
spent bleaching earth must be trained in 
the properties and hazards of the spent 
bleaching earth. This training must be doc-
umented in training records required by 
§ 172.704(d). 

B120

The use of flexible bulk containers 

conforming to the requirements in subpart 
R and subpart S of part 178 of this sub-
chapter is permitted. 

B130

When transported by motor vehicle, 

used diatomaceous earth filter material is 
not subject to any other requirements of 
this subchapter except for the shipping 
paper requirements of subpart C of part 172 
of this subchapter; emergency response in-
formation as required by § 172.602(a)(2) 
through (a)(7) of this subchapter; and the 
marking requirements of § 172.302 of this 
subchapter, if the following requirements 
are met: 
a. Packagings are non-DOT specification 

sift-proof motor vehicles or sift-proof 
roll-on/roll-off bulk bins, which are cov-
ered by a tarpaulin or other equivalent 
means. 

b. The temperature of the material at the 

time it is offered for transport and dur-
ing transportation may not exceed 55 

°

(130 

°

F). 

c. The time between offering the material 

for transportation at the point of origin, 
and unloading the material at the des-
tination does not exceed 48 hours. 

d. In addition to the training requirements 

prescribed in §§ 172.700 through 172.704, 
each driver must be trained regarding 
the properties and hazards of diatoma-
ceous earth filter material, precautions 
to ensure safe transport of the material, 
and actions to be taken in the event of 
an emergency during transportation, or a 
substantial delay in transit. 

B131

When transported by highway, rail, or 

cargo vessel, waste Paint and Paint related 
material (UN1263; PG II and PG III), when 
in plastic or metal inner packagings of not 
more than 26.5 L (7 gallons), are excepted 
from the marking requirements in 

§ 172.301(a) and (c) and the labeling require-
ments in § 172.400(a), when further packed 
in the following specification and non- 
specification bulk outer packagings and 
under the following conditions: 
a. Primary receptacles must conform to 

the general packaging requirements of 
subpart B of part 173 of this subchapter 
and may not leak. If they do leak, they 
must be overpacked in packagings con-
forming to the specification require-
ments of part 178 of this subchapter or in 
salvage packagings conforming to the re-
quirements in § 173.12 of this subchapter. 

b. Primary receptacles must be further 

packed in non-specification bulk outer 
packagings such as cubic yard boxes, 
plastic rigid-wall bulk containers, dump 
trailers, and roll-off containers. Bulk 
outer packagings must be liquid tight 
through design or by the use of lining 
materials. 

c. Primary receptacles may also be further 

packed in specification bulk outer pack-
agings. Authorized specification bulk 
outer packagings are UN11G fiberboard 
intermediate bulk containers (IBC) and 
UN13H4 woven plastic, coated and with 
liner flexible intermediate bulk con-
tainers (FIBCs) meeting the Packing 
Group II performance level and lined 
with a plastic liner of at least 6 mil 
thickness. 

d. All inner packagings placed inside bulk 

outer packagings must be blocked and 
braced to prevent shifting during trans-
portation that could cause the container 
to open or fall over. Specification IBCs 
and FIBCs are to be secured to a pallet. 

B132

Except for transportation by aircraft, 

UN2813, Water reactive solid, n.o.s. (con-
tains magnesium, magnesium nitrides) in 
PG II or III may be packaged in sift-proof 
bulk packagings that prevent liquid from 
reaching the hazardous material with suffi-
cient venting to preclude dangerous accu-
mulation of flammable, corrosive or toxic 
gaseous emissions such as methane, hydro-
gen and ammonia. 

B133

Hydrochloric acid concentration not 

exceeding 38%, in Packing Group II, is au-
thorized to be packaged in UN31H1 or 
UN31HH1 intermediate bulk containers 
when loaded in accordance with the re-
quirements of § 173.35(h) of this subchapter. 

B134

For Large Packagings offered for 

transport by vessel, flexible or fibre inner 
packagings shall be sift-proof and water- 
resistant or shall be fitted with a sift-proof 
and water-resistant liner. 

B135

For Large Packagings offered for 

transport by vessel, flexible or fibre inner 
packagings shall be hermetically sealed. 

B136

Non-specification closed bulk bins are 

authorized. 

background image

377 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

(4) 

IB Codes and IP Codes. 

These pro-

visions apply only to transportation in 
IBCs and Large Packagings. Table 1 au-
thorizes IBCs for specific proper ship-
ping names through the use of IB Codes 
assigned in the § 172.101 table of this 
subchapter. Table 2 defines IP Codes on 
the use of IBCs that are assigned to 
specific commodities in the § 172.101 
Table of this subchapter. Table 3 au-
thorizes Large Packagings for specific 
proper shipping names through the use 
of IB Codes assigned in the § 172.101 
table of this subchapter. Large Pack-
agings are authorized for the Packing 
Group III entries of specific proper 
shipping names when either special 

provision IB3 or IB8 is assigned to that 
entry in the § 172.101 Table. When no IB 
code is assigned in the § 172.101 Table 
for a specific proper shipping name, or 
in § 173.185 or § 173.225(e) Organic Per-
oxide Table for Type F organic perox-
ides, use of an IBC or Large Packaging 
for the material may be authorized 
when approved by the Associate Ad-
ministrator. The letter ‘‘Z’’ shown in 
the marking code for composite IBCs 
must be replaced with a capital code 
letter designation found in 
§ 178.702(a)(2) of this subchapter to 
specify the material used for the other 
packaging. Tables 1, 2, and 3 follow: 

T

ABLE

1—IB C

ODES

(IBC C

ODES

IBC code 

Authorized IBCs 

IB1 .............................

Authorized IBCs: Metal (31A, 31B and 31N). 
Additional Requirement: Only liquids with a vapor pressure less than or equal to 110 kPa at 50 

°

C (1.1 

bar at 122 

°

F), or 130 kPa at 55 

°

C (1.3 bar at 131 

°

F) are authorized. 

IB2 .............................

Authorized IBCs: Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1). 
Additional Requirement: Only liquids with a vapor pressure less than or equal to 110 kPa at 50 

°

C (1.1 

bar at 122 

°

F), or 130 kPa at 55 

°

C (1.3 bar at 131 

°

F) are authorized. 

IB3 .............................

Authorized IBCs: Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1 and 

31HA2, 31HB2, 31HN2, 31HD2 and 31HH2). 

Additional Requirement: Only liquids with a vapor pressure less than or equal to 110 kPa at 50 

°

C (1.1 

bar at 122 

°

F), or 130 kPa at 55 

°

C (1.3 bar at 131 

°

F) are authorized, except for UN2672 (also see 

special provision IP8 in Table 2 for UN2672). 

IB4 .............................

Authorized IBCs: Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N). 

IB5 .............................

Authorized IBCs: Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N); Rigid plastics (11H1, 

11H2, 21H1, 21H2, 31H1 and 31H2); Composite (11HZ1, 21HZ1 and 31HZ1). 

IB6 .............................

Authorized IBCs: Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N); Rigid plastics (11H1, 

11H2, 21H1, 21H2, 31H1 and 31H2); Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2 and 31HZ1). 

Additional Requirement: Composite IBCs 11HZ2 and 21HZ2 may not be used when the hazardous ma-

terials being transported may become liquid during transport. 

IB7 .............................

Authorized IBCs: Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N); Rigid plastics (11H1, 

11H2, 21H1, 21H2, 31H1 and 31H2); Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2 and 31HZ1); Wood-
en (11C, 11D and 11F). 

Additional Requirement: Liners of wooden IBCs must be sift-proof. 

IB8 .............................

Authorized IBCs: Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N); Rigid plastics (11H1, 

11H2, 21H1, 21H2, 31H1 and 31H2 ); Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2 and 31HZ1); Fiber-
board (11G); Wooden (11C, 11D and 11F); Flexible (13H1, 13H2, 13H3, 13H4, 13H5, 13L1, 13L2, 
13L3, 13L4, 13M1 or 13M2). 

IB9 .............................

IBCs are only authorized if approved by the Associate Administrator. 

T

ABLE

2—IP C

ODES

 

IP code 

IP1 .............................

IBCs must be packed in closed freight containers or a closed transport vehicle. 

IP2 .............................

When IBCs other than metal or rigid plastics IBCs are used, they must be offered for transportation in a 

closed freight container or a closed transport vehicle. 

IP3 .............................

Flexible IBCs must be sift-proof and water-resistant or must be fitted with a sift-proof and water-resist-

ant liner. 

IP4 .............................

Flexible, fiberboard or wooden IBCs must be sift-proof and water-resistant or be fitted with a sift-proof 

and water-resistant liner. 

IP5 .............................

IBCs must have a device to allow venting. The inlet to the venting device must be located in the vapor 

space of the IBC under maximum filling conditions. 

IP6 .............................

Non-specification bulk bins are authorized. 

IP7 .............................

For UN identification numbers 1327, 1363, 1364, 1365, 1386, 1408, 1841, 2211, 2217, 2793 and 3314, 

IBCs are not required to meet the IBC performance tests specified in part 178, subpart N, of this sub-
chapter. 

IP8 .............................

Ammonia solutions may be transported in rigid or composite plastic IBCs (31H1, 31H2 and 31HZ1) that 

have successfully passed, without leakage or permanent deformation, the hydrostatic test specified in 
§ 178.814 of this subchapter at a test pressure that is not less than 1.5 times the vapor pressure of 
the contents at 55 

°

C (131 

°

F). 

background image

378 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

T

ABLE

2—IP C

ODES

—Continued 

IP code 

IP13 ...........................

Transportation by vessel in IBCs is prohibited. 

IP14 ...........................

Air must be eliminated from the vapor space by nitrogen or other means. 

IP15 ...........................

For UN2031 with more than 55% nitric acid, rigid plastic IBCs and composite IBCs with a rigid plastic 

inner receptacle are authorized for two years from the date of IBC manufacture. 

IP16 ...........................

IBCs of type 31A and 31N are only authorized if approved by the Associate Administrator. 

IP19 ...........................

For UN identification numbers 3531, 3532, 3533, and 3534, IBCs must be designed and constructed to 

permit the release of gas or vapor to prevent a build-up of pressure that could rupture the IBCs in the 
event of loss of stabilization. 

IP20 ...........................

Dry sodium cyanide or potassium cyanide is also permitted in siftproof, water-resistant, fiberboard IBCs 

when transported in closed freight containers or transport vehicles. 

IP21 ...........................

When transported by vessel, flexible, fiberboard or wooden IBCs must be sift-proof and water-resistant 

or be fitted with a sift-proof and water-resistant liner. 

T

ABLE

3—IB C

ODES

 

[Large packaging authorizations] 

IB3 

Authorized Large Packagings (LIQUIDS) 

(PG III materials only)

2

 

Inner packagings: 

Large outer packagings: 

Glass

10 liter ....

steel (50A). 

Plastics

30 liter

aluminum (50B). 

Metal

40 liter ....

metal other than steel or aluminum (50N). 

rigid plastics (50H). 
natural wood (50C). 
plywood (50D). 
reconstituted wood (50F). 
rigid fiberboard (50G). 

IB8 

Authorized Large Packagings (SOLIDS) 

(PG III materials only)

2

 

Inner packagings: 

Large outer packagings: 

Glass

10 kg ...........................................................

steel (50A). 

Plastics

50 kg .......................................................

aluminum (50B). 

Metal

50 kg ...........................................................

metal other than steel or aluminum (50N). 

Paper

50 kg ..........................................................

flexible plastics (51H).

1

 

Fiber

50 kg ............................................................

rigid plastics (50H). 
natural wood (50C). 
plywood (50D). 
reconstituted wood (50F). 
rigid fiberboard (50G). 

1

Flexible plastic (51H) Large Packagings are only authorized for use with flexible inner packagings. 

2

Except when authorized under Special Provision 41. 

(5) 

‘‘N’’ codes. 

These provisions apply 

only to non-bulk packagings: 

Code/Special Provisions 

N3

Glass inner packagings are permitted in 

combination or composite packagings only 
if the hazardous material is free from 
hydrofluoric acid. 

N4

For combination or composite pack-

agings, glass inner packagings, other than 
ampoules, are not permitted. 

N5

Glass materials of construction are not 

authorized for any part of a packaging 
which is normally in contact with the haz-
ardous material. 

N6

Battery fluid packaged with electric 

storage batteries, wet or dry, must con-
form to the packaging provisions of 
§ 173.159 (g) or (h) of this subchapter. 

N7

The hazard class or division number of 

the material must be marked on the pack-

age in accordance with § 172.302 of this sub-
chapter. However, the hazard label cor-
responding to the hazard class or division 
may be substituted for the marking. 

N8

Nitroglycerin solution in alcohol may be 

transported under this entry only when the 
solution is packed in metal cans of not 
more than 1 L capacity each, overpacked 
in a wooden box containing not more than 
5 L. Metal cans must be completely sur-
rounded with absorbent cushioning mate-
rial. Wooden boxes must be completely 
lined with a suitable material impervious 
to water and nitroglycerin. 

N11

This material is excepted for the speci-

fication packaging requirements of this 
subchapter if the material is packaged in 
strong, tight non-bulk packaging meeting 
the requirements of subparts A and B of 
part 173 of this subchapter. 

N12

Plastic packagings are not authorized. 

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379 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

N20

A 5M1 multi-wall paper bag is author-

ized if transported in a closed transport ve-
hicle. 

N25

Steel single packagings are not author-

ized. 

N32

Aluminum materials of construction 

are not authorized for single packagings. 

N33

Aluminum drums are not authorized. 

N34

Aluminum construction materials are 

not authorized for any part of a packaging 
which is normally in contact with the haz-
ardous material. 

N36

Aluminum or aluminum alloy construc-

tion materials are permitted only for halo-
genated hydrocarbons that will not react 
with aluminum. 

N37

This material may be shipped in an in-

tegrally-lined fiber drum (1G) which meets 
the general packaging requirements of sub-
part B of part 173 of this subchapter, the 
requirements of part 178 of this subchapter 
at the packing group assigned for the ma-
terial and to any other special provisions 
of column 7 of the § 172.101 table. 

N40

This material is not authorized in the 

following packagings: 
a. A combination packaging consisting of a 

4G fiberboard box with inner receptacles 
of glass or earthenware; 

b. A single packaging of a 4C2 sift-proof, 

natural wood box; or 

c. A composite packaging 6PG2 (glass, por-

celain or stoneware receptacles within a 
fiberboard box). 

N41

Metal construction materials are not 

authorized for any part of a packaging 
which is normally in contact with the haz-
ardous material. 

N42

1A1 drums made of carbon steel with 

thickness of body and heads of not less 
than 1.3 mm (0.050 inch) and with a corro-
sion-resistant phenolic lining are author-
ized for stabilized benzyl chloride if tested 
and certified to the Packing Group I per-
formance level at a specific gravity of not 
less than 1.8. 

N43

Metal drums are permitted as single 

packagings only if constructed of nickel or 
monel. 

N45

Copper cartridges are authorized as 

inner packagings if the hazardous material 
is not in dispersion. 

N65

Outage must be sufficient to prevent 

cylinders or spheres from becoming liquid 
full at 55 

°

C (130 

°

F). The vacant space (out-

age) may be charged with a nonflammable 
nonliquefied compressed gas if the pressure 
in the cylinder or sphere at 55 

°

C (130 

°

F) 

does not exceed 125 percent of the marked 
service pressure. 

N73

Packagings consisting of outer wooden 

or fiberboard boxes with inner glass, metal 
or other strong containers; metal or fiber 
drums; kegs or barrels; or strong metal 
cans are authorized and need not conform 
to the requirements of part 178 of this sub-
chapter. 

N74

Packages consisting of tightly closed 

inner containers of glass, earthenware, 
metal or polyethylene, capacity not over 
0.5 kg (1.1 pounds) securely cushioned and 
packed in outer wooden barrels or wooden 
or fiberboard boxes, not over 15 kg (33 
pounds) net weight, are authorized and 
need not conform to the requirements of 
part 178 of this subchapter. 

N75

Packages consisting of tightly closed 

inner packagings of glass, earthenware or 
metal, securely cushioned and packed in 
outer wooden barrels or wooden or fiber-
board boxes, capacity not over 2.5 kg (5.5 
pounds) net weight, are authorized and 
need not conform to the requirements of 
part 178 of this subchapter. 

N76

For materials of not more than 25 per-

cent active ingredient by weight, packages 
consisting of inner metal packagings not 
greater than 250 mL (8 ounces) capacity 
each, packed in strong outer packagings 
together with sufficient absorbent mate-
rial to completely absorb the liquid con-
tents are authorized and need not conform 
to the requirements of part 178 of this sub-
chapter. 

N77

For materials of not more than two 

percent active ingredients by weight, pack-
agings need not conform to the require-
ments of part 178 of this subchapter, if liq-
uid contents are absorbed in an inert mate-
rial. 

N78

Packages consisting of inner glass, 

earthenware, or polyethylene or other non-
fragile plastic bottles or jars not over 0.5 
kg (1.1 pounds) capacity each, or metal 
cans not over five pounds capacity each, 
packed in outer wooden boxes, barrels or 
kegs, or fiberboard boxes are authorized 
and need not conform to the requirements 
of part 178 of this subchapter. Net weight 
of contents in fiberboard boxes may not ex-
ceed 29 kg (64 pounds). Net weight of con-
tents in wooden boxes, barrels or kegs may 
not exceed 45 kg (99 pounds). 

N79

Packages consisting of tightly closed 

metal inner packagings not over 0.5 kg (1.1 
pounds) capacity each, packed in outer 
wooden or fiberboard boxes, or wooden bar-
rels, are authorized and need not conform 
to the requirements of part 178 of this sub-
chapter. Net weight of contents may not 
exceed 15 kg (33 pounds). 

N80

Packages consisting of one inner metal 

can, not over 2.5 kg (5.5 pounds) capacity, 
packed in an outer wooden or fiberboard 
box, or a wooden barrel, are authorized and 
need not conform to the requirements of 
part 178 of this subchapter. 

N82

See § 173.115 of this subchapter for clas-

sification criteria for flammable aerosols. 

N83

This material may not be transported 

in quantities of more than 11.5 kg (25.4 lbs) 
per package. 

N84

The maximum quantity per package is 

500 g (1.1 lbs.). 

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380 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

N85

Packagings certified at the Packing 

Group I performance level may not be 
used. 

N86

UN pressure receptacles made of alu-

minum alloy are not authorized. 

N87

The use of copper valves on UN pressure 

receptacles is prohibited. 

N88

Any metal part of a UN pressure recep-

tacle in contact with the contents may not 
contain more than 65% copper, with a tol-
erance of 1%. 

N89

When steel UN pressure receptacles are 

used, only those bearing the ‘‘H’’ mark are 
authorized. 

N90

Metal packagings are not authorized. 

Packagings of other material with a small 
amount of metal, for example metal clo-
sures or other metal fittings such as those 
mentioned in part 178 of this subchapter, 
are not considered metal packagings. 
Packagings of other material constructed 
with a small amount of metal must be de-
signed such that the hazardous material 
does not contact the metal. 

N91

The use of a non specification sift- 

proof, non-bulk, metal can with or without 
lid, or a non specification sift-proof, non- 
bulk fiber drum, with or without lid is au-
thorized when transporting coal tar pitch 
compounds by motor vehicle or rail 
freight. The fiber drum must to be fab-
ricated with a three ply wall, as a min-
imum. The coal tar pitch compound must 
be in a solid mass during transportation. 

N92

Notwithstanding the provisions of 

§ 173.24(g) of this subchapter, packagings 
shall be designed and constructed to per-
mit the release of gas or vapor to prevent 
a build-up of pressure that could rupture 
the packagings in the event of loss of sta-
bilization. 

N95

UN1075, Liquefied petroleum gas and 

UN1978, Propane authorized for transport 
in DOT 4BA240 cylinders is not subject to 
the UN identification number and proper 
shipping name marking or the label re-
quirements of this part subject to the fol-
lowing conditions: 
a. The cylinder must be transported in a 

closed motor vehicle displaying FLAM-
MABLE GAS placards in accordance with 
subpart F of part 172 of this subchapter. 

b. Shipping papers at all times must reflect 

a correct current accounting of all cyl-
inders both full and expended. 

c. The cylinders are collected and trans-

ported by a private or a contract carrier 
for reconditioning, reuse or disposal. 

(6) 

‘‘R’’ codes. 

These provisions apply 

only to transportation by rail. 

R1

A person who offers for transpor-

tation tank cars containing sulfur, 
molten or residue of sulfur, molten 
may reference the Sulfur Institute’s, 
‘‘Molten Sulphur Rail Tank Car Guid-
ance document’’ (see § 171.7 of this sub-
chapter) to identify tank cars that may 
pose a risk in transportation due to the 
accumulation of formed, solid sulfur on 
the outside of the tank. 

(7) 

‘‘T’’ codes. 

(i) These provisions 

apply to the transportation of haz-
ardous materials in UN portable tanks. 
Portable tank instructions specify the 
requirements applicable to a portable 
tank when used for the transportation 
of a specific hazardous material. These 
requirements must be met in addition 
to the design and construction speci-
fications in part 178 of this subchapter. 
Portable tank instructions T1 through 
T22 specify the applicable minimum 
test pressure, the minimum shell 
thickness (in reference steel), bottom 
opening requirements and pressure re-
lief requirements. Liquefied com-
pressed gases are assigned to portable 
tank instruction T50. Refrigerated liq-
uefied gases that are authorized to be 
transported in portable tanks are spec-
ified in tank instruction T75. 

(ii) The following table specifies the 

portable tank requirements applicable 
to ‘‘T’’ Codes T1 through T22. Column 1 
specifies the ‘‘T’’ Code. Column 2 speci-
fies the minimum test pressure, in bar 
(1 bar = 14.5 psig), at which the periodic 
hydrostatic testing required by § 180.605 
of this subchapter must be conducted. 
Column 3 specifies the section ref-
erence for minimum shell thickness or, 
alternatively, the minimum shell 
thickness value. Column 4 specifies the 
applicability of § 178.275(g)(3) of this 
subchapter for the pressure relief de-
vices. When the word ‘‘Normal’’ is indi-
cated, § 178.275(g)(3) of this subchapter 
does not apply. Column 5 references ap-
plicable requirements for bottom open-
ings in part 178 of this subchapter. 
‘‘Prohibited’’ means bottom openings 
are prohibited, and ‘‘Prohibited for liq-
uids’’ means bottom openings are au-
thorized for solid material only. The 
table follows: 

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381 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

T

ABLE OF

P

ORTABLE

T

ANK

T C

ODES

T1–T22 

[Portable tank codes T1–T22 apply to liquid and solid hazardous materials of Classes 3 through 9 which are transported in 

portable tanks.] 

Portable tank 

instruction 

(1) 

Minimum test 

pressure 

(bar) 

(2) 

Minimum shell thickness 

(in mm-reference steel) 

(See § 178.274(d)) 

(3) 

Pressure-relief requirements 

(See § 178.275(g)) 

(4) 

Bottom opening 

requirements 

(See § 178.275(d)) 

(5) 

T1 ..................

1 .5 

§ 178.274(d)(2) 

Normal ..............................................

§ 178.275(d)(2) 

T2 ..................

1 .5 

§ 178.274(d)(2) 

Normal ..............................................

§ 178.275(d)(3) 

T3 ..................

2 .65  § 178.274(d)(2) 

Normal ..............................................

§ 178.275(d)(2) 

T4 ..................

2 .65  § 178.274(d)(2) 

Normal ..............................................

§ 178.275(d)(3) 

T5 ..................

2 .65  § 178.274(d)(2) 

§ 178.275(g)(3) .................................

Prohibited 

T6 ..................

§ 178.274(d)(2) 

Normal ..............................................

§ 178.275(d)(2) 

T7 ..................

§ 178.274(d)(2) 

Normal ..............................................

§ 178.275(d)(3) 

T8 ..................

§ 178.274(d)(2) 

Normal ..............................................

Prohibited 

T9 ..................

6 mm 

Normal ..............................................

Prohibited for liquids. 

T10 ................

6 mm 

§ 178.275(g)(3) .................................

Prohibited 

T11 ................

§ 178.274(d)(2) 

Normal ..............................................

§ 178.275(d)(3) 

T12 ................

§ 178.274(d)(2) 

§ 178.275(g)(3) .................................

§ 178.275(d)(3) 

T13 ................

6 mm 

Normal ..............................................

Prohibited 

T14 ................

6 mm 

§ 178.275(g)(3) .................................

Prohibited 

T15 ................

10 

§ 178.274(d)(2) 

Normal ..............................................

§ 178.275(d)(3) 

T16 ................

10 

§ 178.274(d)(2) 

§ 178.275(g)(3) .................................

§ 178.275(d)(3) 

T17 ................

10 

6 mm 

Normal ..............................................

§ 178.275(d)(3) 

T18 ................

10 

6 mm 

§ 178.275(g)(3) .................................

§ 178.275(d)(3) 

T19 ................

10 

6 mm 

§ 178.275(g)(3) .................................

Prohibited 

T20 ................

10 

8 mm 

§ 178.275(g)(3) .................................

Prohibited 

T21 ................

10 

10 mm 

Normal ..............................................

Prohibited for liquids. 

§ 178.275(d)(2). 

T22 ................

10 

10 mm 

§ 178.275(g)(3) .................................

Prohibited 

(iii) T50

When portable tank in-

struction T50 is indicated in Column (7) 
of the § 172.101 Hazardous Materials 
Table, the applicable liquefied com-
pressed gas and chemical under pres-
sure descriptions are authorized to be 
transported in portable tanks in ac-
cordance with the requirements of 
§ 173.313 of this subchapter. 

(iv) 

T75. 

When portable tank instruc-

tion T75 is referenced in Column (7) of 
the § 172.101 Table, the applicable re-
frigerated liquefied gases are author-
ized to be transported in portable 
tanks in accordance with the require-
ments of § 178.277 of this subchapter. 

(v) 

UN and IM portable tank codes/spe-

cial provisions. 

When a specific portable 

tank instruction is specified by a ‘‘T’’ 
Code in Column (7) of the § 172.101 Table 
for a specific hazardous material, a 
specification portable tank conforming 
to an alternative tank instruction may 
be used if: 

(A) The alternative portable tank has 

a higher or equivalent test pressure 
(for example, 4 bar when 2.65 bar is 
specified); 

(B) The alternative portable tank has 

greater or equivalent wall thickness 
(for example, 10 mm when 6 mm is 
specified); 

(C) The alternative portable tank has 

a pressure relief device as specified in 
the ‘‘T’’ Code. If a frangible disc is re-
quired in series with the reclosing pres-
sure relief device for the specified port-
able tank, the alternative portable 
tank must be fitted with a frangible 
disc in series with the reclosing pres-
sure relief device; and 

(D) With regard to bottom openings— 
(

1

) When two effective means are 

specified, the alternative portable tank 
is fitted with bottom openings having 
two or three effective means of closure 
or no bottom openings; or 

(

2

) When three effective means are 

specified, the portable tank has no bot-
tom openings or three effective means 
of closure; or 

(

3

) When no bottom openings are au-

thorized, the alternative portable tank 
must not have bottom openings. 

(vi) Except when an organic peroxide 

is authorized under § 173.225(g), if a haz-
ardous material is not assigned a port-
able tank ‘‘T’’ Code, the hazardous ma-
terial may not be transported in a 
portable tank unless approved by the 
Associate Administrator. 

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382 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102 

(8) 

‘‘TP’’ codes. 

(i) These provisions 

apply to the transportation of haz-
ardous materials in IM and UN Speci-
fication portable tanks. Portable tank 
special provisions are assigned to cer-
tain hazardous materials to specify re-
quirements that are in addition to 
those provided by the portable tank in-
structions or the requirements in part 
178 of this subchapter. Portable tank 
special provisions are designated with 
the abbreviation TP (tank provision) 
and are assigned to specific hazardous 
materials in Column (7) of the § 172.101 
Table. 

(ii) The following is a list of the port-

able tank special provisions: 

Code/Special Provisions 

TP1

The maximum degree of filling must 

not exceed the degree of filling determined 
by the following: 

Degree of filling

=

+

(

)







97

1

α

t

t

r

f

.

Where: 
t

r

is the maximum mean bulk temperature 

during transport, and t

f

is the tempera-

ture in degrees celsius of the liquid dur-
ing filling. 

TP2

a. The maximum degree of filling 

must not exceed the degree of filling deter-
mined by the following: 

Degree of filling

=

+

(

)







95

1

α

t

t

r

f

.

Where: 
t

r

is the maximum mean bulk temperature 

during transport, 

t

f

is the temperature in degrees celsius of the 

liquid during filling, and 

is the mean coefficient of cubical expan-

sion of the liquid between the mean tem-
perature of the liquid during filling (t

f

and the maximum mean bulk tempera-
ture during transportation (t

r

) both in 

degrees celsius. 

b. For liquids transported under ambient 

conditions 

may be calculated using the for-

mula: 

α =

d

d

d

15

50

50

35

Where: 
d

15

and d

50

are the densities (in units of mass 

per unit volume) of the liquid at 15 

°

C (59 

°

F) and 50 

°

C (122 

°

F), respectively. 

TP3

The maximum degree of filling (in %) 

for solids transported above their melting 
points and for elevated temperature liquids 
shall be determined by the following: 

Degree of filling = 95

d

d

r

f







.

Where: d

f

and d

r

are the mean densities of the 

liquid at the mean temperature of the liquid 
during filling and the maximum mean bulk 
temperature during transport respectively. 

TP4

The maximum degree of filling for 

portable tanks must not exceed 90%. 

TP5

For a portable tank used for the 

transport of flammable refrigerated liquefied 
gases or refrigerated liquefied oxygen, the 
maximum rate at which the portable tank 
may be filled must not exceed the liquid flow 
capacity of the primary pressure relief sys-
tem rated at a pressure not exceeding 120 
percent of the portable tank’s design pres-
sure. For portable tanks used for the trans-
port of refrigerated liquefied helium and re-
frigerated liquefied atmospheric gas (except 
oxygen), the maximum rate at which the 
tank is filled must not exceed the liquid flow 
capacity of the pressure relief device rated 
at 130 percent of the portable tank’s design 
pressure. Except for a portable tank con-
taining refrigerated liquefied helium, a port-
able tank shall have an outage of at least 
two percent below the inlet of the pressure 
relief device or pressure control valve, under 
conditions of incipient opening, with the 
portable tank in a level attitude. No outage 
is required for helium. 

TP6

The tank must be equipped with a 

pressure release device which prevent a tank 
from bursting under fire engulfment condi-
tions (the conditions prescribed in CGA pam-
phlet S–1.2 (see § 171.7 of this subchapter) or 
alternative conditions approved by the Asso-
ciate Administrator may be used to consider 
the fire engulfment condition), taking into 
account the properties of the hazardous ma-
terial to be transported. 

TP7

The vapor space must be purged of 

air by nitrogen or other means. 

TP8

A portable tank having a minimum 

test pressure of 1.5 bar (150 kPa) may be used 
when the flash point of the hazardous mate-
rial transported is greater than 0 

°

C (32 

°

F). 

TP9

A hazardous material assigned to 

special provision TP9 in Column (7) of the 
§ 172.101 Table may only be transported in a 
portable tank if approved by the Associate 
Administrator. 

TP10

A lead lining, not less than 5 mm 

thick, which shall be tested annually, or an-
other suitable lining material approved by 
the competent authority, is required. A port-
able tank may be offered for transport after 
the date of expiry of the last lining inspec-
tion for a period not to exceed three months 
for purposes of performing the next required 

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383 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

test or inspection, after emptying but before 
cleaning. 

TP12

This material is considered highly 

corrosive to steel. 

TP13

Self-contained breathing apparatus 

must be provided when this hazardous mate-
rial is transported by sea. 

TP16

The portable tank must be pro-

tected against over and under pressurization 
which may be experienced during transpor-
tation. The means of protection must be ap-
proved by the approval agency designated to 
approve the portable tank in accordance 
with the procedures in part 107, subpart E, of 
this subchapter. The pressure relief device 
must be preceded by a frangible disk in ac-
cordance with the requirements in 
§ 178.275(g)(3) of this subchapter to prevent 
crystallization of the product in the pressure 
relief device. 

TP17

Only inorganic non-combustible ma-

terials may be used for thermal insulation of 
the tank. 

TP18

The temperature of this material 

must be maintained between 18 

°

C (64.4 

°

F) 

and 40 

°

C (104 

°

F) while in transportation. 

Portable tanks containing solidified meth-
acrylic acid must not be reheated during 
transportation. 

TP19

The calculated wall thickness must 

be increased by 3 mm at the time of con-
struction. Wall thickness must be verified 
ultrasonically at intervals midway between 
periodic hydraulic tests (every 2.5 years). 
The portable tank must not be used if the 
wall thickness is less than that prescribed by 
the applicable T code in Column (7) of the 
Table for this material. 

TP20

This hazardous material must only 

be transported in insulated tanks under a ni-
trogen blanket. 

TP21

The wall thickness must not be less 

than 8 mm. Portable tanks must be hydrau-
lically tested and internally inspected at in-
tervals not exceeding 2.5 years. 

TP22

Lubricants for portable tank fit-

tings (for example, gaskets, shut-off valves, 
flanges) must be oxygen compatible. 

TP24

The portable tank may be fitted 

with a device to prevent the build up of ex-
cess pressure due to the slow decomposition 
of the hazardous material being transported. 
The device must be in the vapor space when 
the tank is filled under maximum filling 
conditions. This device must also prevent an 
unacceptable amount of leakage of liquid in 
the case of overturning. 

TP25

Sulphur trioxide 99.95% pure and 

above may be transported in tanks without 
an inhibitor provided that it is maintained 
at a temperature equal to or above 32.5 

°

(90.5 

°

F). 

TP26

The heating device must be exterior 

to the shell. For UN 3176, this requirement 
only applies when the hazardous material re-
acts dangerously with water. 

TP27

A portable tank having a minimum 

test pressure of 4 bar (400 kPa) may be used 
provided the calculated test pressure is 4 bar 
or less based on the MAWP of the hazardous 
material, as defined in § 178.275 of this sub-
chapter, where the test pressure is 1.5 times 
the MAWP. 

TP28

A portable tank having a minimum 

test pressure of 2.65 bar (265 kPa) may be 
used provided the calculated test pressure is 
2.65 bar or less based on the MAWP of the 
hazardous material, as defined in § 178.275 of 
this subchapter, where the test pressure is 
1.5 times the MAWP. 

TP29

A portable tank having a minimum 

test pressure of 1.5 bar (150.0 kPa) may be 
used provided the calculated test pressure is 
1.5 bar or less based on the MAWP of the haz-
ardous materials, as defined in § 178.275 of 
this subchapter, where the test pressure is 
1.5 times the MAWP. 

TP30

This hazardous material may only 

be transported in insulated tanks. 

TP31

This hazardous material may only 

be transported in tanks in the solid state. 

TP32

Portable tanks may be used subject 

to the following conditions: 

a. Each portable tank constructed of metal 

must be fitted with a pressure-relief device 
consisting of a reclosing spring loaded type, 
a frangible disc or a fusible element. The set 
to discharge for the spring loaded pressure 
relief device and the burst pressure for the 
frangible disc, as applicable, must not be 
greater than 2.65 bar for portable tanks with 
minimum test pressures greater than 4 bar; 

b. The suitability for transport in tanks 

must be demonstrated using test 8(d) in Test 
Series 8 (see UN Manual of Tests and Cri-
teria, Part 1, Sub-section 18.7) (IBR, see 
§ 171.7 of this subchapter) or an alternative 
means approved by the Associate Adminis-
trator. 

TP33

The portable tank instruction as-

signed for this substance applies for granular 
and powdered solids and for solids which are 
filled and discharged at temperatures above 
their melting point which are cooled and 
transported as a solid mass. Solid substances 
transported or offered for transport above 
their melting point are authorized for trans-
portation in portable tanks conforming to 
the provisions of portable tank instruction 
T4 for solid substances of packing group III 
or T7 for solid substances of packing group 
II, unless a tank with more stringent re-
quirements for minimum shell thickness, 
maximum allowable working pressure, pres-
sure-relief devices or bottom outlets are as-
signed in which case the more stringent tank 
instruction and special provisions shall 
apply. Filling limits must be in accordance 
with portable tank special provision TP3. 
Solids meeting the definition of an elevated 
temperature material must be transported in 
accordance with the applicable requirements 
of this subchapter. 

background image

384 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.102, Nt. 

TP36

For material assigned this portable 

tank special provision, portable tanks used 
to transport such material may be equipped 
with fusible elements in the vapor space of 
the portable tank. 

TP37

IM portable tanks are only author-

ized for the shipment of hydrogen peroxide 
solutions in water containing 72% or less hy-
drogen peroxide by weight. Pressure relief 
devices shall be designed to prevent the 
entry of foreign matter, the leakage of liquid 
and the development of any dangerous excess 
pressure. In addition, the portable tank must 
be designed so that internal surfaces may be 
effectively cleaned and passivated. Each 
tank must be equipped with pressure relief 
devices conforming to the following require-
ments: 

Concentration of hydrogen per peroxide solution 

Total

1

 

52% or less ..............................................................

11 

Over 52%, but not greater than 60% ......................

22 

Over 60%, but not greater than 72% ......................

32 

1

Total venting capacity in standard cubic feet hour 

(S.C.F.H.) per pound of hydrogen peroxide solution. 

TP38

Each portable tank must be insu-

lated with an insulating material so that the 
overall thermal conductance at 15.5 

°

C (60 

°

F) 

is no more than 1.5333 kilojoules per hour per 
square meter per degree Celsius (0.075 Btu 
per hour per square foot per degree Fahr-
enheit) temperature differential. Insulating 
materials may not promote corrosion to 
steel when wet. 

TP39

[Reserved] 

TP40

The portable tank must not be 

transported when connected with spray ap-
plication equipment. 

TP41

[Reserved] 

TP44

Each portable tank must be made of 

stainless steel, except that steel other than 
stainless steel may be used in accordance 
with the provisions of § 173.24b(b) of this sub-
chapter. Thickness of stainless steel for tank 
shell and heads must be the greater of 7.62 
mm (0.300 inch) or the thickness required for 
a portable tank with a design pressure at 
least equal to 1.5 times the vapor pressure of 
the hazardous material at 46 

°

C (115 

°

F). 

TP45

Each portable tank must be made of 

stainless steel, except that steel other than 
stainless steel may be used in accordance 
with the provisions of 173.24b(b) of this sub-
chapter. Thickness of stainless steel for port-
able tank shells and heads must be the great-
er of 6.35 mm (0.250 inch) or the thickness re-
quired for a portable tank with a design pres-
sure at least equal to 1.3 times the vapor 
pressure of the hazardous material at 46 

°

(115 

°

F). 

TP46

Portable tanks in sodium metal 

service are not required to be 
hydrostatically retested. 

TP47

The 2.5 year internal examination 

may be waived or substituted by other test 
methods or inspection procedures specified 

by the competent authority or its authorized 
body, provided that the portable tank is 
dedicated to the transport of the 
organometallic substances to which this 
tank special provision is assigned. However 
this examination is required when the condi-
tions of § 180.605(f) are met. 

(9) 

‘‘W’’ codes. 

These provisions apply 

only to transportation by water: 

Code/Special Provisions 

W1 This substance in a non friable prill or 

granule form is not subject to the require-
ments of this subchapter when tested in 
accordance with the UN Manual of Test 
and Criteria (IBR, 

see 

§ 171.7 of this sub-

chapter) and is found to not meet the defi-
nition or criteria for inclusion in Division 
5.1. 

W7

Vessel stowage category for uranyl ni-

trate hexahydrate solution is ‘‘D’’ as de-
fined in § 172.101(k)(4). 

W8

Vessel stowage category for pyrophoric 

thorium metal or pyrophoric uranium 
metal is ‘‘D’’ as defined in § 172.101(k)(4). 

W9

When offered for transportation by 

water, the following Specification pack-
agings are not authorized unless approved 
by the Associate Administrator: woven 
plastic bags, plastic film bags, textile bags, 
paper bags, IBCs and bulk packagings. 

W10

When offered for transportation by ves-

sel, the use of Large Packagings (see § 171.8 
of this subchapter) is prohibited. 

W31

Non-bulk packagings must be hermeti-

cally sealed. 

W40

Non-bulk bags are not allowed. 

W41

When offered for transportation by 

water, this material must be packaged in 
bales and be securely and tightly bound 
with rope, wire or similar means. 

W100

Non-bulk flexible, fibreboard or wood-

en packagings must be sift-proof and 
water-resistant or must be fitted with a 
sift-proof and water-resistant liner. 

[Amdt. 172–123, 55 FR 52582, Dec. 21, 1990] 

E

DITORIAL

N

OTE

: For F

EDERAL

R

EGISTER

ci-

tations affecting § 172.102, see the List of CFR 
Sections Affected, which appears in the 
Finding Aids section of the printed volume 
and at 

www.govinfo.gov. 

E

FFECTIVE

D

ATE

N

OTE

: At 88 FR 60375, 

Sept. 1, 2023, in § 172.102, paragraph (c)(1) was 
amended by adding special provision 439, ef-
fective Oct. 31, 2023. For the convenience of 
the user, the added text is set forth as fol-
lows: 

§ 172.102

Special provisions. 

* * * * * 

(c) * * * 
(1) * * * 

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385 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.201 

439 UN1972 is not authorized for transpor-

tation by rail tank car until either issuance 
of a final rule concluding the rulemaking ac-
tion proceeding under RIN 2137–AF54, or 
June 30, 2025, whichever occurs first. For in-
formation and the status of RIN 2137–AF54, 
please refer to the Office of Management and 
Budget’s Office of Information and Regu-
latory Affairs at 

www.reginfo.gov. 

* * * * * 

Subpart C—Shipping Papers 

§ 172.200

Applicability. 

(a) 

Description of hazardous materials 

required. 

Except as otherwise provided 

in this subpart, each person who offers 
a hazardous material for transpor-
tation shall describe the hazardous ma-
terial on the shipping paper in the 
manner required by this subpart. 

(b) This subpart does not apply to 

any material, other than a hazardous 
substance, hazardous waste or marine 
pollutant, that is— 

(1) Identified by the letter ‘‘A’’ in col-

umn 1 of the § 172.101 table, except 
when the material is offered or in-
tended for transportation by air; or 

(2) Identified by the letter ‘‘W’’ in 

column 1 of the § 172.101 table, except 
when the material is offered or in-
tended for transportation by water; or 

(3) A limited quantity package unless 

the material is offered for transpor-
tation by aircraft or vessel. 

(4) Category B infectious substances 

prepared in accordance with § 173.199. 

[Amdt. 172–29A, 41 FR 40677, Sept. 20, 1976, as 
amended by Amdt. 172–58, 45 FR 34697, May 
22, 1980; Amdt. 172–74, 47 FR 43065, Sept. 30, 
1982; Amdt. 172–112, 53 FR 17160, May 13, 1988; 
Amdt. 172–127, 57 FR 52938, Nov. 5, 1992; 71 FR 
32258, June 2, 2006; 76 FR 3365, Jan. 19, 2011; 78 
FR 1112, Jan. 7, 2013; 87 FR 79772, Dec. 27, 
2022] 

§ 172.201

Preparation and retention of 

shipping papers. 

(a) 

Contents. 

When a description of 

hazardous material is required to be in-
cluded on a shipping paper, that de-
scription must conform to the fol-
lowing requirements: 

(1) When a hazardous material and a 

material not subject to the require-
ments of this subchapter are described 
on the same shipping paper, the haz-
ardous material description entries re-

quired by § 172.202 and those additional 
entries that may be required by 
§ 172.203: 

(i) Must be entered first, or 
(ii) Must be entered in a color that 

clearly contrasts with any description 
on the shipping paper of a material not 
subject to the requirements of this sub-
chapter, except that a description on a 
reproduction of a shipping paper may 
be highlighted, rather than printed, in 
a contrasting color (the provisions of 
this paragraph apply only to the basic 
description required by § 172.202(a)(1), 
(2), (3), and (4)), or 

(iii) Must be identified by the entry 

of an ‘‘X’’ placed before the basic ship-
ping description required by § 172.202 in 
a column captioned ‘‘HM.’’ (The ‘‘X’’ 
may be replaced by ‘‘RQ,’’ if appro-
priate.) 

(2) The required shipping description 

on a shipping paper and all copies of 
the shipping paper used for transpor-
tation purposes must be legible and 
printed (manually or mechanically) in 
English. 

(3) Unless it is specifically authorized 

or required in this subchapter, the re-
quired shipping description may not 
contain any code or abbreviation. 

(4) A shipping paper may contain ad-

ditional information concerning the 
material provided the information is 
not inconsistent with the required de-
scription. Unless otherwise permitted 
or required by this subpart, additional 
information must be placed after the 
basic description required by 
§ 172.202(a). 

(5) 

Electronic shipping papers. 

For 

transportation by rail, a rail carrier 
may accept shipping paper information 
either telephonically (i.e., voice com-
munications and facsimiles) or elec-
tronically (EDI) from an offeror of a 
hazardous materials shipment in ac-
cordance with the provisions in para-
graphs (a)(5)(i)–(a)(5)(iv) of this section. 
See § 171.8 for the EDI definition. 

(i) When the information applicable 

to the consignment is provided under 
this requirement the information must 
be available to the offeror and carrier 
at all times during transport, and the 
carrier must have and maintain a 
printed copy of this information until 
delivery of the hazardous materials on 
the shipping paper is complete. When a