3,5-Diamino-4-chloro-2-[[4'-[[2,6-diamino-3-methyl-5-[(4-sulfophenyl)azo]phenyl]azo]-1,1'-biphenyl-4-yl]azo]benzenesulfonic acid disodium salt

4-(4-Aminophenyl)benzenamine double nitriding, first with 3,5-Diamino-4-chlorobenzenesulfboic acid?coupling, and then and 4-Aminobenzenesulfonic acid diazo, in acid conditions and 4-Methylbenzene-1,3-diamine coupled to a product matches.

brown. Slightly soluble in water for orange brown, slightly soluble in alcohol. ?In concentrated sulfuric acid for gray light blue, for yellow brown after diluted. The dye solution to join strong hydrochloric acid have dark brown precipitation; Add thick sodium hydroxide solution have orange brown precipitation.

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