Pipeline and Haz. Matls. Safety Admin., DOT Section 172.426 [Amdt. 172-123, 56 FR 66257, Dec. 20, 1991] Section 172.427 OXIDIZER label. (a) Except for size and color, the OXIDIZER label must be as follows: ORGANIC PEROXIDE label. (a) Except for size and color, the ORGANIC PEROXIDE label must be as follows: EC02MR91.027 [Amdt. 172-123, 56 FR 66257, Dec. 20, 1991] (b) In addition to complying with Section 172.407, the background color on the OXIDIZER label must be yellow. 417 VerDate Sep<11>2014 16:41 Oct 31, 2018 Jkt 244226 PO 00000 Frm 00427 Fmt 8010 Sfmt 8010 Q:\49\49V2.TXT PC31 EC02MR91.026 (b) In addition to complying with Section 172.407, the background color on the DANGEROUS WHEN WET label must be blue. Section 172.427