8003-57-4 直接黑 RLN
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英文别名Direct Fast Greay RLN; Direct black 56 (C.I. 34170); Grey LBN; 2-Naphthalenesulfonic acid, 5 (or 8)-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-8(or 5)-[[4-(phenylazo)-6(or 7)-sulfo-1-naphthalenyl]azo], trisodium salt; Atul Direct Light Fast Grey BR; Dinamine Fast Grey BR; Direct Fast Black LBN