369 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

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.). 

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 

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