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438 

49 CFR Ch. I (10–1–19 Edition) 

§ 172.550 

(b) In addition to complying with 

§ 172.519, the background color on the 
DANGEROUS WHEN WET placard 
must be blue. The letters in the words 
‘‘WHEN WET’’ must be at least 25 mm 
(1.0 inches) high. The symbol, text, 
class number and inner border must be 
white. 

[Amdt. 172–123, 56 FR 66263, Dec. 20, 1991] 

§ 172.550

OXIDIZER placard. 

(a) Except for size and color, the OXI-

DIZER placard must be as follows: 

(b) In addition to complying with 

§ 172.519, the background color on the 
OXIDIZER placard must be yellow. The 
symbol, text, division number and 
inner border must be black. 

[Amdt. 172–123, 56 FR 66263, Dec. 20, 1991] 

§ 172.552

ORGANIC PEROXIDE 

placard. 

(a) Except for size and color, the OR-

GANIC PEROXIDE placard must be as 
follows: 

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439 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.554 

(b) In addition to complying with 

§ 172.519, the background on the OR-
GANIC PEROXIDE placard must be red 
in the top half and yellow in the lower 
half. The text, division number and 
inner border must be black; the symbol 
may be either black or white. 

(c) For transportation by highway, a 

Division 5.2 placard conforming to the 
specifications in this section in effect 

on December 31, 2006 may continue to 
be used until January 1, 2014. 

[71 FR 78628, Dec. 29, 2006, as amended at 76 
FR 43528, July 20, 2011] 

§ 172.553

[Reserved] 

§ 172.554

POISON placard. 

(a) Except for size and color, the POI-

SON placard must be as follows: 

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