Pigment Red 48:3 Chemical Name PIGMENT RED 48:3 C.I. No. 15865:3 CAS No. 15782-05-5 Synonyms Fast red BBS,Fast red BBS,Microlen Red 2BSP,Fast Scarlet GS,Lithol Scarlet K,Sandosperse Fire Red WF 483 Molecular Formula C18H15ClN2O6S Molecular Weight 422.84