Acid Black 232

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidcoupling, aniline diazo, in alkaline conditions and the above the products of coupling, and 3-(Diethylamino)phenol?coupling.

Properties and Applications

black. Mainly used for the polyamide fiber dyeing and printing

Standard(Polyamide)	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	3-4	4	4-5	4			4-5	4-5