StacksVerified U.S. regulatory reference

49 CFR §172.532

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Except for size and color, the FLAMMABLE GAS placard must be as follows:
  2. (b)In addition to complying with § 172.519, the background color on the FLAMMABLE GAS placard must be red. The symbol, text, class number and inner border must be white.