英文名称:Saturn Grey Lrn; Chlorantine Fast Grey Rln; Pyrazol Fast Grey 2R; C.I. 34170; 5(Or 8)-[(7-Amino-1-Hydroxy-3-Sulfo-2-Naphthalenyl)Azo]-8(Or 5)-[[4-(Phenylazo)-6(Or 7)-Sulfo-1-Naphthalenyl]Azo]-2-Naphthalenesulfonic Acid Trisodium Salt; C.I. Direct Black 56; Direct Black 56