1,3-Benzenedisulfonic acid, 4,6-diamino-5-[[4'-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-2,2'-dichloro[1,1'-biphenyl]-4-yl]azo]-, trisodium salt

CAS NO.：6375-57-1
Empirical Formula: C28H18Cl2N7Na3O10S3
Molecular Weight: 848.55373
EINECS: 613-371-4

What is 1,3-Benzenedisulfonic acid, 4,6-diamino-5-[[4'-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-2,2'-dichloro[1,1'-biphenyl]-4-yl]azo]-, trisodium salt?

Preparation

4-(4-Amino-2-chlorophenyl)-3-chlorobenzenamine double nitriding, in acid conditions and 4,6-Diaminobenzene-1,3-disulfonic acid, and then in three alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid?coupling.

Properties and Applications

red light brown. Soluble in water for orange brown, slightly soluble in ethanol for orange red. For the strong sulfuric acid in purplish red, orange is palm diluted. In water solution to join strong hydrochloric acid for orange brown; Add thick sodium hydroxide solution for orange brown.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
Standard	Light Fastness	Fading	Stain	Persperation Fastness	Fading	Stain	Fading	Stain
ISO	3-4	4					4

Safety information for 1,3-Benzenedisulfonic acid, 4,6-diamino-5-[[4'-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-2,2'-dichloro[1,1'-biphenyl]-4-yl]azo]-, trisodium salt

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