6'-[(4-Aminobenzoyl)amino]-2-ethoxy-4-[(2,5-dichloro-4-sodiosulfophenyl)azo]-1'-hydroxy-[1,2'-azobisnaphthalene]-3',6-disulfonic acid disodium salt

Preparation

4-Amino-2,5-dichlorobenzenesulfonic acid diazo, and 5-Amino-7-ehtoxy-2-naphthalenesulfonic acidcoupling, its product to diazo, and 7-(4-Aminobenzamido)-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications

green. Soluble in water for green light blue, slightly soluble in ethanol, easily soluble in soluble fiber element, insoluble in other organic solvents. In the dark for the strong sulfuric acid, diluted to blue, green precipitation; In nitric acid solution for brown, then become yellow. The dye solution to join strong hydrochloric acid blue precipitation; Add thick sodium hydroxide solution for blue precipitation.

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