disodium 5-[[4-[[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]phenyl]amino]carbonyl]phenyl]azo]salicylate

Preparation

4-Amino-N-(4-aminophenyl)benzamide double nitriding, first?coupling with2-Hydroxybenzoic acid, and ??7-(4-Aminobenzamido)-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications

red. Soluble in water for big red to red, soluble in ethanol for red orange. The strong sulfuric acid for product red, diluted for pink, dark precipitation. The dye solution to join strong hydrochloric acid for blu-ray red to purplish red color, have precipitation; Add thick sodium hydroxide solution for orange brown, have precipitation.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	4	4	3	3-4		4
AATCC	5	2	3	2		3