4,4'-[(2-Methyl-5-sodiosulfo-1,3-phenylene)bis[azo(4,6-diamino-3,1-phenylene)azo]]bis[naphthalene-1-sulfonic acid sodium] salt Usage And Synthesis

Preparation

3,5-Diamino-4-methylbenzenesulfonic acid double nitriding, and 4-Hydroxynaphthalene-1-sulfonic acid diazo, and Benzene-1,3-diamine coupled to a product (2 Moore) coupled.

Properties and Applications

brown. Soluble in water for orange brown, and adequate soluble in ethanol for yellow light brown. The strong sulfuric acid for sauce red + blue, for orange brown after diluted. The dye solution to join strong hydrochloric acid for orange brown, have precipitation; Add thick sodium hydroxide solution for orange brown.

4,4'-[(2-Methyl-5-sodiosulfo-1,3-phenylene)bis[azo(4,6-diamino-3,1-phenylene)azo]]bis[naphthalene-1-sulfonic acid sodium] salt(6473-05-8)Related Product Information

• Direct Brown 7
• C.I. Direct brown 75
• DIRECT BROWN 74
• 6-Amino-3-[[4'-[[2,6-diamino-3-methyl-5-[(4-sulfophenyl)azo]phenyl]azo]-1,1'-biphenyl-4-yl]azo]-4-hydroxy-2-naphthalenesulfonic acid disodium salt
• Direct Brown 69
• Direct Brown 73
• C.I. Direct Brown 67
• Direct Brown 78
• Direct Brown 70