6375-57-1

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.

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
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	3-4	4					4