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406 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.323 

marking displayed on a freight con-
tainer or portable tank loaded on a 
motor vehicle or rail car. This mark 
may be displayed in black lettering on 
a white square-on-point configuration 
having the same outside dimensions as 
a placard. 

(d) The MARINE POLLUTANT mark 

is not required— 

(1) On single packagings or combina-

tion packagings where each single 
package or each inner packaging of 
combination packagings has: 

(i) A net quantity of 5 L (1.3 gallons) 

or less for liquids; or 

(ii) A net mass of 5 kg (11 pounds) or 

less for solids 

(2) On a combination packaging con-

taining a marine pollutant, other than 
a severe marine pollutant, in inner 
packagings each of which contains: 

(i) 5 L (1.3 gallons) or less net capac-

ity for liquids; or 

(ii) 5 kg (11 pounds) or less net capac-

ity for solids. 

(3) Except for transportation by ves-

sel, on a bulk packaging, freight con-
tainer or transport vehicle that bears a 
label or placard specified in subparts E 
or F of this part. 

(4) On a package of limited quantity 

material marked in accordance with 
§ 172.315 of this part. 

(e) 

MARINE POLLUTANT mark. 

The 

MARINE POLLUTANT mark must 
conform to the following: 

(1) Except for size, the MARINE POL-

LUTANT mark must appear as follows: 

Symbol (fish and tree): Black on white 

or suitable contrasting background. 
(2) The marking must be in the form 

of a square-on-point. The symbol and 
border must be black on a white or 

suitable contrasting background. The 
width of the border forming the square- 
on-point marking must be at least 2 
mm. Each side of the mark must be— 

(i) At least 100 mm (3.9 inches) as 

measured from the outside of the lines 
forming the border for marks applied 
to: 

(A) Non-bulk packages, except in the 

case of packages which, because of 
their size, can only bear smaller 
marks. If the size of the package so re-
quires, the dimensions/line thickness 
may be reduced, provided the marking 
remains clearly visible. Where dimen-
sions are not specified, all features 
shall be in approximate proportion to 
those shown. 

(B) Bulk packages with a capacity of 

less than 3,785 L (1,000 gallons); or 

(ii) At least 250 mm (9.8 inches) for 

marks applied to all other bulk pack-
ages. 

(3) 

Transitional exception. 

A marking 

in conformance with the requirements 
of this paragraph in effect on December 
31, 2014, may continue to be used until 
December 31, 2016. 

(4) For domestic transportation, a 

packaging marked prior to January 1, 
2017 and in conformance with the re-
quirements of this paragraph in effect 
on December 31, 2014, may continue in 
service until the end of its useful life. 

(f) 

Exceptions. 

See § 171.4(c). 

[Amdt. 172–127, 57 FR 52938, Nov. 5, 1992, as 
amended by Amdt. 172–136, 59 FR 38064, July 
26, 1994; Amdt. 172–145, 60 FR 49110, Sept. 21, 
1995; 66 FR 45379, Aug. 28, 2001; 70 FR 56098, 
Sept. 23, 2005; 74 FR 2252, Jan. 14, 2009; 76 FR 
3367, Jan. 19, 2011; 80 FR 1150, Jan. 8, 2015; 85 
FR 83380, Dec. 21, 2020; 87 FR 44990, July 26, 
2022] 

§ 172.323

Infectious substances. 

(a) In addition to other requirements 

of this subpart, a bulk packaging con-
taining a regulated medical waste, as 
defined in § 173.134(a)(5) of this sub-
chapter, must be marked with a BIO-
HAZARD marking conforming to 29 
CFR 1910.1030(g)(1)(i)— 

(1) On two opposing sides or two ends 

other than the bottom if the packaging 
has a capacity of less than 3,785 L (1,000 
gallons). The BIOHAZARD marking 
must measure at least 152.4 mm (6 
inches) on each side and must be visi-
ble from the direction it faces. 

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407 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.323 

(2) On each end and each side if the 

packaging has a capacity of 3,785 L 
(1,000 gallons) or more. The BIO-
HAZARD marking must measure at 
least 152.4 mm (6 inches) on each side 
and must be visible from the direction 
it faces. 

(b) For a bulk packaging contained in 

or on a transport vehicle or freight 
container, if the BIOHAZARD marking 
on the bulk packaging is not visible, 

the transport vehicle or freight con-
tainer must be marked as required by 
paragraph (a) of this section on each 
side and each end. 

(c) The background color for the BIO-

HAZARD marking required by para-
graph (a) of this section must be or-
ange and the symbol and letters must 
be black. Except for size the BIO-
HAZARD marking must appear as fol-
lows: 

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408 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.324 

(d) The BIOHAZARD marking re-

quired by paragraph (a) of this section 
must be displayed on a background of 
contrasting color. It may be displayed 
on a plain white square-on-point con-
figuration having the same outside di-
mensions as a placard, as specified in 
§ 172.519(c) of this part. 

[67 FR 53135, Aug. 14, 2002, as amended at 76 
FR 56314, Sept. 13, 2011] 

§ 172.324

Hazardous substances in 

non-bulk packagings. 

For each non-bulk package that con-

tains a hazardous substance— 

(a) Except for packages of radio-

active material labeled in accordance 
with § 172.403, if the proper shipping 
name of a material that is a hazardous 
substance does not identify the haz-
ardous substance by name, the name of 
the hazardous substance must be 
marked on the package, in parentheses, 
in association with the proper shipping 
name. If the material contains two or 
more hazardous substances, at least 
two hazardous substances, including 
the two with the lowest reportable 
quantities (RQs), must be identified. 
For a hazardous waste, the waste code 
(e.g., D001), if appropriate, may be used 
to identify the hazardous substance. 

(b) The letters ‘‘RQ’’ must be marked 

on the package in association with the 
proper shipping name. 

(c) A package of limited quantity 

material marked in accordance with 
§ 172.315 must also be marked in accord-

ance with the applicable requirements 
of this section. 

[73 FR 4716, Jan. 28, 2008, as amended at 76 
FR 3367, Jan. 19, 2011] 

§ 172.325

Elevated temperature mate-

rials. 

(a) Except as provided in paragraph 

(b) of this section, a bulk packaging 
containing an elevated temperature 
material must be marked on two op-
posing sides with the word ‘‘HOT’’ in 
black or white Gothic lettering on a 
contrasting background. The marking 
must be displayed on the packaging 
itself or in black lettering on a plain 
white square-on-point configuration 
having the same outside dimensions as 
a placard. (See § 172.302(b) for size of 
markings on bulk packagings.) 

(b) Bulk packagings containing mol-

ten aluminum or molten sulfur must be 
marked ‘‘MOLTEN ALUMINUM’’ or 
‘‘MOLTEN SULFUR’’, respectively, in 
the same manner as prescribed in para-
graph (a) of this section. 

(c) If the identification number is 

displayed on a white-square-on-point 
display configuration, as prescribed in 
§ 172.336(b), the word ‘‘HOT’’ may be 
displayed in the upper corner of the 
same white-square-on-point display 
configuration. The word ‘‘HOT’’ must 
be in black letters having a height of 
at least 50 mm (2.0 inches). Except for 
size, these markings shall be as illus-
trated for an Elevated temperature ma-
terial, liquid, n.o.s.: