4,5-Dihydroxy-3-[[4'-[(2-hydroxy-6-sodiosulfo-1-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt Chemical Properties

EPA Substance Registry System

C.I. Direct Blue 58 (6426-69-3)

4,5-Dihydroxy-3-[[4'-[(2-hydroxy-6-sodiosulfo-1-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt Usage And Synthesis

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, First coupling with?4,5-Dihydroxynaphthalene-2,7-disulfonic acid coupling, again with 6-Hydroxynaphthalene-2-sulfonic acid?coupling.

Properties and Applications

dark red light blue. Soluble in water for purple. The strong sulfuric acid in blue, diluted into purple solution, then a red light purple precipitation. The dye solution to join hydrochloric acid have red light purple precipitation; Sodium hydroxide solution to a red solution.

4,5-Dihydroxy-3-[[4'-[(2-hydroxy-6-sodiosulfo-1-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt(6426-69-3)Related Product Information

• 1-Naphthalenesulfonic acid, 4-amino-6-[2-[4'-[2-(5-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]diazenyl]-5-hydroxy-, sodium salt (1:2)
• 1,6-Naphthalenedisulfonic acid, 8-hydroxy-7-[[4-[[4'-[(1-hydroxy-3,8-disulfo-2-naphthalenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-1-naphthalenyl]azo]-, tetrasodium salt
• 5-Amino-3-[[4'-[(8-amino-1-hydroxy-5-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]-4-hydroxynaphthalene-2,7-disulfonic acid disodium salt
• 1,6-Naphthalenedisulfonic acid, 4-[[4-[[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]azo]-1-naphthalenyl]azo]-, trisodium salt
• DIRECT BLUE 67
• 2-Naphthalenesulfonic acid, 4-hydroxy-3-4-(4-nitro-2-sulfophenyl)azo-6(or 7)-sulfo-1-naphthalenylazo-7-(phenylamino)-, trisodium salt
• CI NO 22610
• Evans Blue
• 1,6-Naphthalenedisulfonic acid, 7-[[4'-[(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-8-hydroxy-, trisodium salt