2-Naphthalenesulfonic acid, 8,8'-[carbonylbis[imino(2-sulfo-4,1-phenylene)azo]]bis[7-(methylamino)-, tetrasodium salt Usage And Synthesis

Preparation

1,3-Bis(4-amino-3-sulfophenyl)urea double nitriding, and 7-Aminonaphthalene-2-sulfonic acid?(2 Moore) coupled.

Properties and Applications

blue light pink. Soluble in water for red, slightly soluble in ethanol is palm red light product. The strong sulfuric acid for orange red brown, diluted purple for grey brown. The dye solution to join strong hydrochloric acid for brown, have precipitation; Add thick sodium hydroxide solution for product red

2-Naphthalenesulfonic acid, 8,8'-[carbonylbis[imino(2-sulfo-4,1-phenylene)azo]]bis[7-(methylamino)-, tetrasodium salt(6772-28-7)Related Product Information

• tetrasodium 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-aminonaphthalene-2,7-disulphonate]
• disodium 8,8'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(7-hydroxynaphthalene-1-sulphonate)
• 2-Naphthalenesulfonic acid, 7-[(2,4-dihydroxyphenyl)azo]-3-[[3-[(2,4-dihydroxyphenyl)azo]phenyl]azo]-4-hydroxy-, monosodium salt
• Direct Red 45
• 1,6-Naphthalenedisulfonic acid, 7-[[4-(4,6-dimethyl-2-benzothiazolyl)-2-methylphenyl]azo]-8-hydroxy-, disodium salt
• 7-Amino-4-hydroxy-3-[[4'-[(4-hydroxy-2-sodiosulfophenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2-sulfonic acid sodium salt
• GERANINE G
• 2-Hydroxy-5-[[4'-[(1,6-dihydroxy-3-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]benzoic acid sodium salt
• 1,6-Naphthalenedisulfonic acid, 8-hydroxy-7-[[4-(6-methyl-2-benzothiazolyl)phenyl]azo]-, disodium salt