1) Benzoic acid,5-[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-2-hydroxy-,disodium salt
C.I.直接黑51
2) 2-Naphthalenesulfonic acid, 3-[[4-[(2,4-dimethyl-6-sulfophenyl)azo]-2-methoxy-5-methylphenyl]azo]-4-hydroxy-7-(phenylamino)-, disodium salt
C.I.直接紫51
3) 3-[(1,5-Dihydroxy-2-naphthalenyl)azo]-4-hydroxy-5-nitro-benzene sulfonic acid monosodium salt
C.I.媒介黑51
4) C.I.Direct Black 38
C.I.直接黑38
5) Kayarus supra grey l3R
C.I.直接黑117
6) C.I. Direct black 146
C.I.直接黑146
补充资料：C.I.直接黑51
CAS：3442-21-5
分子式：C27H19N5O7S·2Na
中文名称：C.I.直接黑51
英文名称：Benzoic acid, 5-[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-2-hydroxy-, disodium salt
Benzoic acid,5-[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-2-hydroxy-,disodium salt
分子式：C27H19N5O7S·2Na
中文名称：C.I.直接黑51
英文名称：Benzoic acid, 5-[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-2-hydroxy-, disodium salt
Benzoic acid,5-[[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-2-hydroxy-,disodium salt
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