| 英文名称: | | Benzoic acid,3(or 5)-[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-2-hydroxy-,disodium salt | | C.I.Direct black 51 | | Benzoic acid, 3(or 5)-[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-2-hydroxy-, disodium salt |
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