C.I. Direct Black 56
[CAS# 8003-57-4]

Identification

• Name: C.I. Direct Black 56
• Synonyms: C.I. 34170; Chlorantine Fast Grey RLN; Pyrazol Fast Grey 2R; Saturn Grey LRN; 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
• Molecular Formula: C₃₆H₂₂N₇O₁₀S₃Na₃
• Molecular Weight: 877.77
• CAS Registry Number: 8003-57-4
• EC Number: 616-812-9