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49 CFR Ch. I (10–1–19 Edition) 

§ 172.1 

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: 49 U.S.C. 5101–5128, 44701; 49 

CFR 1.81, 1.96 and 1.97. 

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OURCE

: Amdt. 172–29, 41 FR 15996, Apr. 15, 

1976, unless otherwise noted. 

Subpart A—General 

§ 172.1

Purpose and scope. 

This part lists and classifies those 

materials which the Department has 
designated as hazardous materials for 
purposes of transportation and pre-
scribes the requirements for shipping 
papers, package marking, labeling, and 
transport vehicle placarding applicable 
to the shipment and transportation of 
those hazardous materials. 

[Amdt. 172–29, 41 FR 15997, Apr. 15, 1976, as 
amended by 66 FR 45379, Aug. 28, 2001] 

§ 172.3

Applicability. 

(a) This part applies to— 
(1) Each person who offers a haz-

ardous material for transportation, and 

(2) Each carrier by air, highway, rail, 

or water who transports a hazardous 
material. 

(b) When a person, other than one of 

those provided for in paragraph (a) of 
this section, performs a packaging la-
beling or marking function required by 
this part, that person shall perform the 
function in accordance with this part. 

[Amdt. 172–29, 41 FR 15996, Apr. 15, 1976, as 
amended by Amdt. 172–32, 41 FR 38179, Sept. 
9, 1976] 

Subpart B—Table of Hazardous 

Materials and Special Provisions 

§ 172.101

Purpose and use of haz-

ardous materials table. 

(a) The Hazardous Materials Table 

(Table) in this section designates the 
materials listed therein as hazardous 
materials for the purpose of transpor-
tation of those materials. For each 
listed material, the Table identifies the 
hazard class or specifies that the mate-
rial is forbidden in transportation, and 
gives the proper shipping name or di-
rects the user to the preferred proper 

shipping name. In addition, the Table 
specifies or references requirements in 
this subchapter pertaining to labeling, 
packaging, quantity limits aboard air-
craft and stowage of hazardous mate-
rials aboard vessels. 

(b) 

Column 1: Symbols. Column 1 of the 

Table contains six symbols (‘‘ + ’’, ‘‘A’’, 
‘‘D’’, ‘‘G’’, ‘‘I’’ and ‘‘W’’) as follows: 

(1) The plus (+) sign fixes the proper 

shipping name, hazard class and pack-
ing group for that entry without regard 
to whether the material meets the defi-
nition of that class, packing group or 
any other hazard class definition. When 
the plus sign is assigned to a proper 
shipping name in Column (1) of the 
§ 172.101 Table, it means that the mate-
rial is known to pose a risk to humans. 
When a plus sign is assigned to mix-
tures or solutions containing a mate-
rial where the hazard to humans is sig-
nificantly different from that of the 
pure material or where no hazard to 
humans is posed, the material may be 
described using an alternative shipping 
name that represents the hazards posed 
by the material. An appropriate alter-
nate proper shipping name and hazard 
class may be authorized by the Asso-
ciate Administrator. 

(2) The letter ‘‘A’’ denotes a material 

that is subject to the requirements of 
this subchapter only when offered or 
intended for transportation by aircraft, 
unless the material is a hazardous sub-
stance or a hazardous waste. A ship-
ping description entry preceded by an 
‘‘A’’ may be used to describe a material 
for other modes of transportation pro-
vided all applicable requirements for 
the entry are met. 

(3) The letter ‘‘D’’ identifies proper 

shipping names which are appropriate 
for describing materials for domestic 
transportation but may be inappro-
priate for international transportation 
under the provisions of international 
regulations (e.g., IMO, ICAO). An alter-
nate proper shipping name may be se-
lected when either domestic or inter-
national transportation is involved. 

(4) The letter ‘‘G’’ identifies proper 

shipping names for which one or more 
technical names of the hazardous ma-
terial must be entered in parentheses, 
in association with the basic descrip-
tion. (See § 172.203(k).) 

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