5-[[4'-[[8-Amino-1-hydroxy-7-[(2-nitrophenyl)azo]-3,6-disulfo-2-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid trisodium salt

CAS NO.：6360-62-9
Empirical Formula: C35H24N8O12S2.3Na
Molecular Weight: 881.72

What is 5-[[4'-[[8-Amino-1-hydroxy-7-[(2-nitrophenyl)azo]-3,6-disulfo-2-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid trisodium salt?

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first in alkaline conditions and 2-Nitrobenzenamine?diazo, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidand coupled the product of three, and then and 2-Hydroxybenzoic acid?coupling.

Properties and Applications

dark green. Soluble in water for the green, slightly soluble in ethanol for blue light green. The strong sulfuric acid for violet black, Gray light green for diluted. The dye solution to join strong hydrochloric acid have blue light green precipitation; Add thick sodium hydroxide solution have green olive precipitation.

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

Properties of 5-[[4'-[[8-Amino-1-hydroxy-7-[(2-nitrophenyl)azo]-3,6-disulfo-2-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid trisodium salt

EPA Substance Registry System

C.I. Direct Green 9 (6360-62-9)

Safety information for 5-[[4'-[[8-Amino-1-hydroxy-7-[(2-nitrophenyl)azo]-3,6-disulfo-2-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid trisodium salt

Computed Descriptors for 5-[[4'-[[8-Amino-1-hydroxy-7-[(2-nitrophenyl)azo]-3,6-disulfo-2-naphtyl]azo]-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid trisodium salt

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