Regulationcurrent
49 CFR 172.528
NON-FLAMMABLE GAS placard.
Current as of 2026-08-18 Government source
eCFR editorial compilationAuthoritative but unofficial
View source (a)Except for size and color, the NON-FLAMMABLE GAS placard must be as follows:#
(b)In addition to complying with § 172.519, the background color on the NON-FLAMMABLE GAS placard must be green. The letters in both words must be at least 38 mm (1.5 inches) high. The symbol, text, class number and inner border must be white.#