412 

49 CFR Ch. I (10–1–18 Edition) 

§ 172.407 

each side with each side having a solid 
line inner border 5 mm inside and par-
allel to the edge. The 5 mm measure-
ment is from the outside edge of the 
label to the outside of the solid line 
forming the inner border. The width of 
the solid line forming the inner border 
must be at least 2 mm. 

(i) If the size of the package so re-

quires, the dimensions of the label and 
its features may be reduced proportion-
ally provided the symbol and other ele-
ments of the label remain clearly visi-
ble. 

(ii) Where dimensions are not speci-

fied, all features shall be in approxi-
mate proportion to those shown in 
§§ 172.411 through 172.448 of this sub-
part, as appropriate. 

(iii) 

Transitional exception. 

For do-

mestic transportation, a label in con-
formance with the requirements of 49 
CFR 172.407(c)(1) (revised as of October 
1, 2014), may continue to be used until 
December 31, 2018. 

(iv) For domestic transportation, a 

packaging labeled 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. 

(2) The CARGO AIRCRAFT ONLY 

label must be a rectangle measuring at 
least 110 mm (4.3 inches) in height by 
120 mm (4.7 inches) in width. The words 
‘‘CARGO AIRCRAFT ONLY’’ must be 
shown in letters measuring at least 6.3 
mm (0.25 inches) in height. 

(3) Except as otherwise provided in 

this subpart, the hazard class number, 
or division number, as appropriate, 
must be at least 6.3 mm (0.25 inches) 
and not greater than 12.7 mm (0.5 
inches). 

(4) When text indicating a hazard is 

displayed on a label, the label name 
must be shown in letters measuring at 
least 7.6 mm (0.3 inches) in height. For 
SPONTANEOUSLY COMBUSTIBLE or 
DANGEROUS WHEN WET labels, the 
words ‘‘Spontaneously’’ and ‘‘When 
Wet’’ must be shown in letters meas-
uring at least 5.1 mm (0.2 inches) in 
height. 

(5) The symbol on each label must be 

proportionate in size to that shown in 
the appropriate section of this subpart. 

(d) 

Color. 

(1) The background color on 

each label must be as prescribed in 

§§ 172.411 through 172.448 of this sub-
part, as appropriate. 

(2) The symbol, text, numbers, and 

border must be shown in black on a 
label except that— 

(i) White may be used on a label with 

a one color background of green, red or 
blue. 

(ii) White must be used for the text 

and class number for the CORROSIVE 
label. 

(iii) White may be used for the sym-

bol for the ORGANIC PEROXIDE label. 

(A) If white is used for the symbol for 

the ORGANIC PEROXIDE label then 
the solid line forming the inner border 
on the upper half of the label must also 
be white. 

(B) 

Transitional exception. 

A label in 

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

(C) For domestic transportation, a 

packaging labeled 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. 

(iv) The FLAMMABLE GAS label dis-

played on cylinders and gas cartridges 
for liquefied petroleum gases may be 
shown in the background color of the 
receptacle if adequate contrast is pro-
vided. 

(3) Black and any color on a label 

must be able to withstand, without 
substantial change, a 72-hour 
fadeometer test (for a description of 
equipment designed for this purpose, 
see ASTM G 23–69 (1975) or ASTM G 26– 
70). 

(4)(i) A color on a label, upon visual 

examination, must fall within the color 
tolerances— 

(A) Displayed on color charts con-

forming to the technical specifications 
for charts set forth in table 1 or 2 in ap-
pendix A to this part; or 

(B) For labels printed on packaging 

surfaces, specified in table 3 in appen-
dix A to this part. 

(ii) Color charts conforming to ap-

pendix A to this part are on display at 
the Standards and Rulemaking Divi-
sion, Pipeline and Hazardous Materials 
Safety Administration, U.S. Depart-
ment of Transportation, East Building, 

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