Class 4 – Other Flammable Substances

Placard

For For FLAMMABLE SOLID placard 454 kg (1,001 lbs) or more.
In addition to complying with 49 CFR §172.519, the background on the FLAMMABLE SOLID placard must be white with seven vertical red stripes. The stripes must be equally spaced, with one red stripe placed in the center of the label. Each red stripe and each white space between two red stripes must be 25 mm (1.0 inches) wide. The letters in the word “SOLID” must be at least 38.1 mm (1.5 inches) high. The symbol, text, class number and inner border must be black.

The placards must be as follows:
FLAMMABLE SOLID

Source: 49 CFR §172.546

Label

In addition to complying with 49 CFR §172.407, the background on the FLAMMABLE SOLID label must be white with vertical red stripes equally spaced on each side of a red stripe placed in the center of the label. The red vertical stripes must be spaced so that, visually, they appear equal in width to the white spaces between them. The symbol (flame) and text (when used) must be overprinted. The text “FLAMMABLE SOLID” may be placed in a white rectangle.

The labels must be as follows:
FLAMMABLE SOLID

Source: 49 CFR §172.420

General Information & Assignment

Placard

For SPONTANEOUSLY COMBUSTIBLE placard 454 kg (1,001 lbs) or more.
In addition to complying with 49 CFR §172.519, the background color on the SPONTANEOUSLY COMBUSTIBLE placard must be red in the lower half and white in upper half. The letters in the word “SPONTANEOUSLY” must be at least 12 mm (0.5 inch) high. The symbol, text, class number and inner border must be black.

The placards must be as follows:
SPONTANEOUSLY COMBUSTIBLE

Source: 49 CFR §172.547

Label

In addition to complying with 49 CFR §172.407, the background color on the lower half of the SPONTANEOUSLY COMBUSTIBLE label must be red and the upper half must be white.

The labels must be as follows:
SPONTANEOUSLY COMBUSTIBLE

Source: 49 CFR §172.422

General Information & Assignment

Placard

For DANGEROUS WHEN WET (Division 4.3) placard any quantity.
In addition to complying with 49 CFR §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.

The placards must be as follows:
DANGEROUS WHEN WET

Source: 49 CFR §172.548

Label

In addition to complying with 49 CFR §172.407, the background color on the DANGEROUS WHEN WET label must be blue.

The labels must be as follows:
DANGEROUS WHEN WET

Source: 49 CFR §172.423

General Information & Assignment