Pigment Yellow 12 Synonyms: C. I. Pigment Yellow 12 C. I. 21090; 1. Product Name: Pigment Yellow 12 Synonyms: C. I. Pigment Yellow 12C. I. 21090;2, 2'-((3, 3'-dichloro-4 ... :Pigment yellow (P.Y.1, P.Y.3, P.Y.12. P.Y.13, P.Y.14, P.Y.65, P.Y.83,etc.)Pigment red (P.R.2, P.R.8, P ... .R.21, P.R.22, P.R ...