StacksVerified U.S. regulatory reference

49 CFR §172.423

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
  1. (a)Except for size and color, the DANGEROUS WHEN WET label must be as follows:
  2. (b)In addition to complying with § 172.407, the background color on the DANGEROUS WHEN WET label must be blue.