CFR › Title 49 › Part 172 › §172.42749 CFR §172.427Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Except for size and color, the ORGANIC PEROXIDE label must be as follows:(b)In addition to complying with § 172.407, the background on the ORGANIC PEROXIDE label must be red in the top half and yellow in the lower half.