417 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.400 

with the marking requirements of 
§ 172.301(a)(1) of this subchapter. 

[Amdt. 172–101, 45 FR 74667, Nov. 10, 1980, as 
amended by Amdt. 172–74, 47 FR 40365, Sept. 
30, 1982; Amdt. 172–109, 52 FR 13038, Apr. 20, 
1987; Amdt. 172–110, 52 FR 29528, Aug. 10, 1987; 
Amdt. 172–123, 55 FR 52593, Dec. 21, 1990; 56 
FR 66255, Dec. 20, 1991; 65 FR 50459, Aug. 18, 
2000; 73 FR 4716, Jan. 28, 2008; 76 FR 43527, 
July 20, 2011; 78 FR 14714, Mar. 7, 2013; 78 FR 
65478, Oct. 31, 2013] 

§ 172.338

Replacement of identification 

numbers. 

If more than one of the identification 

number markings on placards, orange 
panels, or white square-on-point dis-
play configurations that are required 
to be displayed are lost, damaged or de-
stroyed during transportation, the car-
rier shall replace all the missing or 
damaged identification numbers as 
soon as practicable. However, in such a 
case, the numbers may be entered by 
hand on the appropriate placard, or-
ange panel or white square-on-point 
display configuration providing the 
correct identification numbers are en-
tered legibly using an indelible mark-
ing material. When entered by hand, 
the identification numbers must be lo-
cated in the white display area speci-
fied in § 172.332. This section does not 
preclude required compliance with the 
placarding requirements of subpart F 
of this subchapter. 

[Amdt. 172–110, 52 FR 29528, Aug. 10, 1987] 

Subpart E—Labeling 

§ 172.400

General labeling require-

ments. 

(a) Except as specified in § 172.400a, 

each person who offers for transpor-
tation or transports a hazardous mate-
rial in any of the following packages or 
containment devices, shall label the 
package or containment device with la-
bels specified for the material in the 
§ 172.101 table and in this subpart: 

(1) A non-bulk package; 
(2) A bulk packaging, other than a 

cargo tank, portable tank, or tank car, 
with a volumetric capacity of less than 
18 m

3

(640 cubic feet), unless placarded 

in accordance with subpart F of this 
part; 

(3) A portable tank of less than 3785 L 

(1000 gallons) capacity, unless plac-
arded in accordance with subpart F of 
this part; 

(4) A DOT Specification 106 or 110 

multi-unit tank car tank, unless plac-
arded in accordance with subpart F of 
this part; and 

(5) An overpack, freight container or 

unit load device, of less than 18 m

3

(640 

cubic feet), which contains a package 
for which labels are required, unless 
placarded or marked in accordance 
with § 172.512 of this part. 

(b) Labeling is required for a haz-

ardous material which meets one or 
more hazard class definitions, in ac-
cordance with column 6 of the § 172.101 
table and the following table: 

T

ABLE

1 

TO

P

ARAGRAPH

(b) 

Hazard class or division 

Label name 

Label de-

sign 

or section 

reference 

1.1 ....................................................................................

EXPLOSIVES 1.1 ............................................................

172.411 

1.2 ....................................................................................

EXPLOSIVES 1.2 ............................................................

172.411 

1.3 ....................................................................................

EXPLOSIVES 1.3 ............................................................

172.411 

1.4 ....................................................................................

EXPLOSIVES 1.4 ............................................................

172.411 

1.5 ....................................................................................

EXPLOSIVES 1.5 ............................................................

172.411 

1.6 ....................................................................................

EXPLOSIVES 1.6 ............................................................

172.411 

2.1 ....................................................................................

FLAMMABLE GAS ..........................................................

172.417 

2.2 ....................................................................................

NON–FLAMMABLE GAS ................................................

172.415 

2.3 ....................................................................................

POISON GAS ..................................................................

172.416 

3 Flammable Liquid (Combustible liquid) ........................

FLAMMABLE LIQUID (none) ..........................................

172.419 

4.1 ....................................................................................

FLAMMABLE SOLID .......................................................

172.420 

4.2 ....................................................................................

SPONTANEOUSLY COMBUSTIBLE ..............................

172.422 

4.3 ....................................................................................

DANGEROUS WHEN WET ............................................

172.423 

5.1 ....................................................................................

OXIDIZER ........................................................................

172.426 

5.2 ....................................................................................

ORGANIC PEROXIDE ....................................................

172.427 

6.1 (material poisonous by inhalation (see § 171.8 of 

this subchapter)).

POISON INHALATION HAZARD ....................................

172.429 

6.1 (other than a material poisonous by inhalation) .......

POISON ...........................................................................

172.430 

6.1 (inhalation hazard, Zone A or B) ..............................

POISON INHALATION HAZARD ....................................

172.429 

418 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.400a 

T

ABLE

1 

TO

P

ARAGRAPH

(b)—Continued 

Hazard class or division 

Label name 

Label de-

sign 

or section 

reference 

6.1 (other than inhalation hazard, Zone A or B) .............

POISON ...........................................................................

172.430 

6.2 ....................................................................................

INFECTIOUS SUBSTANCE ............................................

172.432 

7 (see § 172.403) ............................................................

RADIOACTIVE WHITE–I ................................................

172.436 

7 .......................................................................................

RADIOACTIVE YELLOW–II ............................................

172.438 

7 .......................................................................................

RADIOACTIVE YELLOW–III ...........................................

172.440 

7 (fissile radioactive material; see § 172.402) .................

FISSILE ...........................................................................

172.441 

7 (empty packages, see § 173.428 of this subchapter) ..

EMPTY ............................................................................

172.450 

8 .......................................................................................

CORROSIVE ...................................................................

172.442 

9 .......................................................................................

CLASS 9 ..........................................................................

172.446 

[Amdt. 172–123, 55 FR 52593, Dec. 21, 1990, as amended at 56 FR 66255, Dec. 20, 1991; Amdt. 172– 
151, 62 FR 1228, Jan. 8, 1997; 64 FR 10776, Mar. 5, 1999; 64 FR 51918, Sept. 27, 1999; 69 FR 3668, 
Jan. 26, 2004; 69 FR 64471, Nov. 4, 2004; 78 FR 60753, Oct. 2, 2013; 85 FR 83381, Dec. 21, 2020; 87 
FR 79773, Dec. 27, 2022] 

§ 172.400a

Exceptions from labeling. 

(a) Notwithstanding the provisions of 

§ 172.400, a label is not required on— 

(1) A Dewar flask meeting the re-

quirements in § 173.320 of this sub-
chapter or a cylinder containing a Di-
vision 2.1, 2.2, or 2.3 material that is 
durably and legibly marked in accord-
ance with CGA C–7, Appendix A (IBR; 
see § 171.7 of this subchapter). Notwith-
standing this exception, overpacks 
must be labeled (see § 173.25 of this sub-
chapter). 

(2) A package or unit of military ex-

plosives (including ammunition) 
shipped by or on behalf of the DOD 
when in— 

(i) Freight containerload, carload or 

truckload shipments, if loaded and un-
loaded by the shipper or DOD; or 

(ii) Unitized or palletized break-bulk 

shipments by cargo vessel under char-
ter to DOD if at least one required 
label is displayed on each unitized or 
palletized load. 

(3) A package containing a hazardous 

material other than ammunition that 
is— 

(i) Loaded and unloaded under the su-

pervision of DOD personnel, and 

(ii) Escorted by DOD personnel in a 

separate vehicle. 

(4) A compressed gas cylinder perma-

nently mounted in or on a transport 
vehicle. 

(5) A freight container, aircraft unit 

load device or portable tank, which— 

(i) Is placarded in accordance with 

subpart F of this part, or 

(ii) Conforms to paragraph (a)(3) or 

(b)(3) of § 172.512. 

(6) An overpack or unit load device in 

or on which labels representative of 
each hazardous material in the over-
pack or unit load device are visible. 

(7) A package of low specific activity 

radioactive material and surface con-
taminated objects, when transported 
under § 173.427(a)(6)(vi) of this sub-
chapter. 

(8) 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’’ when offered in conformance with 
the conditions of § 172.102(c)(1), Special 
provision 382. 

(b) Certain exceptions to labeling re-

quirements are provided for small 
quantities and limited quantities in ap-
plicable sections in part 173 of this sub-
chapter. 

(c) Notwithstanding the provisions of 

§ 172.402(a), a Division 6.1 subsidiary 
hazard label is not required on a pack-
age containing a Class 8 (corrosive) 
material which has a subsidiary hazard 
of Division 6.1 (poisonous) if the tox-
icity of the material is based solely on 
the corrosive destruction of tissue 
rather than systemic poisoning. In ad-
dition, a Division 4.1 subsidiary hazard 
label is not required on a package bear-
ing a Division 4.2 label. 

(d) A package containing a material 

poisonous by inhalation (see § 171.8 of 
this subchapter) in a closed transport 
vehicle or freight container may be ex-
cepted from the POISON INHALATION