149 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.101 

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).) 

(5) The letter ‘‘I’’ identifies proper 

shipping names which are appropriate 
for describing materials in inter-
national transportation. An alternate 
proper shipping name may be selected 
when only domestic transportation is 
involved. 

(6) The letter ‘‘W’’ denotes a material 

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

(c) 

Column 2: Hazardous materials de-

scriptions and proper shipping names. 

Column 2 lists the hazardous materials 
descriptions and proper shipping names 
of materials designated as hazardous 
materials. Modification of a proper 
shipping name may otherwise be re-
quired or authorized by this section. 
Proper shipping names are limited to 
those shown in Roman type (not 
italics). 

(1) Proper shipping names may be 

used in the singular or plural and in ei-
ther capital or lower case letters. 
Words may be alternatively spelled in 
the same manner as they appear in the 
ICAO Technical Instructions or the 
IMDG Code. For example ‘‘aluminum’’ 
may be spelled ‘‘aluminium’’ and ‘‘sul-
fur’’ may be spelled ‘‘sulphur’’. How-
ever, the word ‘‘inflammable’’ may not 
be used in place of the word ‘‘flam-
mable’’. 

(2) Punctuation marks and words in 

italics are not part of the proper ship-
ping name, but may be used in addition 
to the proper shipping name. The word 

VerDate Sep<11>2014 

16:41 Oct 31, 2018

Jkt 244226

PO 00000

Frm 00159

Fmt 8010

Sfmt 8010

Q:\49\49V2.TXT

PC31