DIRECT BLACK 170

4-Amino-N-(4-aminophenyl)benzamide double nitriding, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupled, aniline diazo, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?group of neighborhood, again with a coupling 2-Aminophenol coupling.

black. Used for cellulose fiber dyeing and printing of, also can be used for leather shading.

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