408 

49 CFR Ch. I (10–1–18 Edition) 

§ 172.403 

S

UBSIDIARY

H

AZARD

L

ABELS

—Continued 

Subsidiary hazard 

level (packing 

group) 

Subsidiary Hazard (Class or Division) 

3  4.1 4.2 4.3 5.1 6.1  8 

II ..........................

X X X X X X X 

III .........................

*  X X X X X X 

X—Required for all modes. 
*—Required for all modes, except for a material with a flash 

point at or above 38 

°

C (100 

°

F) transported by rail or high-

way. 

**—Reserved 
***—Impossible as subsidiary hazard. 

(b) 

Display of hazard class on labels. 

The appropriate hazard class or divi-
sion number must be displayed in the 
lower corner of a primary hazard label 
and a subsidiary hazard label. 

(c) 

Cargo Aircraft Only label. 

Each per-

son who offers for transportation or 
transports by aircraft a package con-
taining a hazardous material which is 
authorized on cargo aircraft only shall 
label the package with a CARGO AIR-
CRAFT ONLY label specified in 
§ 172.448 of this subpart. 

(d) 

Class 7 (Radioactive) Materials. 

Ex-

cept as otherwise provided in this para-
graph, each package containing a Class 
7 material that also meets the defini-
tion of one or more additional hazard 
classes must be labeled as a Class 7 ma-
terial as required by § 172.403 and for 
each additional hazard. 

(1) A subsidiary label is not required 

for a package containing material that 
satisfies all of the criteria in § 173.4, 
§ 173.4a, or § 173.4b applicable to the sub-
sidiary hazard class. 

(2) Each package or overpack con-

taining fissile material, other than 
fissile-excepted material (see § 173.453 
of this subchapter) must bear two 
FISSILE labels, affixed to opposite 
sides of the package or overpack, which 
conforms to the figure shown in 
§ 172.441; such labels, where applicable, 
must be affixed adjacent to the labels 
for radioactive materials. 

(e) 

Class 1 (explosive) Materials. 

In ad-

dition to the label specified in column 
6 of the § 172.101 table, each package of 
Class 1 material that also meets the 
definition for: 

(1) Division 6.1, Packing Groups I or 

II, shall be labeled POISON or POISON 
INHALATION HAZARD, as appro-
priate. 

(2) Class 7, shall be labeled in accord-

ance with § 172.403 of this subpart. 

(f) 

Division 2.2 materials. 

In addition 

to the label specified in column 6 of the 
§ 172.101 table, each package of Division 
2.2 material that also meets the defini-
tion for an oxidizing gas (see § 171.8 of 
this subchapter) must be labeled OXI-
DIZER. 

(g) 

Division 2.3 materials. 

In addition 

to the label specified in column 6 of the 
§ 172.101 table, each package of Division 
2.3 material that also meets the defini-
tion for: 

(1) Division 2.1, must be labeled 

Flammable Gas; 

(2) Division 5.1, must be labeled Oxi-

dizer; and 

(3) Class 8, must be labeled Corrosive. 

[Amdt. 172–123, 55 FR 52594, Dec. 21, 1990, as 
amended at 56 FR 66255, Dec. 20, 1991; Amdt. 
172–139, 59 FR 67490, Dec. 29, 1994; Amdt. 172– 
140, 60 FR 26805, May 18, 1995; Amdt. 172–149, 
61 FR 27173, May 30, 1996; 62 FR 39405, July 22, 
1997; 66 FR 33425, June 21, 2001; 69 FR 3668, 
Jan. 26, 2004; 74 FR 2252, Jan. 14, 2009; 76 FR 
56314, Sept. 13, 2011; 79 FR 40609, July 11, 2014] 

§ 172.403

Class 7 (radioactive) mate-

rial. 

(a) Unless excepted from labeling by 

§§ 173.421 through 173.427 of this sub-
chapter, each package of radioactive 
material must be labeled as provided in 
this section. 

(b) The proper label to affix to a 

package of Class 7 (radioactive) mate-
rial is based on the radiation level at 
the surface of the package and the 
transport index. The proper category of 
label must be determined in accord-
ance with paragraph (c) of this section. 
The label to be applied must be the 
highest category required for any of 
the two determining conditions for the 
package. RADIOACTIVE WHITE-I is 
the lowest category and RADIO-
ACTIVE YELLOW-III is the highest. 
For example, a package with a trans-
port index of 0.8 and a maximum sur-
face radiation level of 0.6 millisievert 
(60 millirems) per hour must bear a 
RADIOACTIVE YELLOW-III label. 

(c) Category of label to be applied to 

Class 7 (radioactive) materials pack-
ages: 

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