... F4R (Pigment Red 8) CAS No.: 6410-30-6 EU No.: 229-100-4C. I. No.: 12335 Pigment Red 8 ( PR8/ Fast Red ... FR (SCW) 1. Product Name: Pigment Red 8/Fast Red F4R (Pigment Red 8) CAS No.: 6410-30-6 EU No.: 229-100 ... , P.Y.83)Pigment red (P.R.2, P.R.8, P.R.21, P.R.22, P.R.23, P ... -LC, Naphthol KB, Naphthol ITR, Naphthol AS-SG. Pigment Red 8