Benzoic acid, 5-[[4'-[(2,6-diamino-3-methyl-5-sulfophenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2-hydroxy-3-methyl-, disodium salt

CAS No.
2868-76-0
Chemical Name:
Benzoic acid, 5-[[4'-[(2,6-diamino-3-methyl-5-sulfophenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2-hydroxy-3-methyl-, disodium salt
Synonyms
Direct Orange 7;C.I.Direct Orange 7:C.I.23380;Benzoic acid, 5-[[4'-[(2,6-diamino-3-methyl-5-sulfophenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2-hydroxy-3-methyl-, disodium salt
CBNumber:
CB94790018
Molecular Formula:
C29H26N6Na2O6S
Molecular Weight:
632.59788
MDL Number:
MOL File:
2868-76-0.mol

Benzoic acid, 5-[[4'-[(2,6-diamino-3-methyl-5-sulfophenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2-hydroxy-3-methyl-, disodium salt Chemical Properties,Uses,Production

Preparation

3,3′-Dimethylbenzidine double nitriding, first with 2-Hydroxy-3-methylbenzoic acid coupling, again with 2,4-Diamino-5-methylbenzenesulfonic acid coupling

Properties and Applications

yellow orange. Soluble in water for gold orange, and adequate soluble in ethanol for golden brown. The strong sulfuric acid for purple (have dark), for dark yellow brown after diluted.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 3-4 3-4 2 1-2 2

Benzoic acid, 5-[[4'-[(2,6-diamino-3-methyl-5-sulfophenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2-hydroxy-3-methyl-, disodium salt Preparation Products And Raw materials

Benzoic acid, 5-[[4'-[(2,6-diamino-3-methyl-5-sulfophenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2-hydroxy-3-methyl-, disodium salt C.I.Direct Orange 7:C.I.23380 Direct Orange 7 2868-76-0