6222-44-2

2-Amino-4-chlorophenol diazotization, in alkaline condition and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling.

dark blue light green. Soluble in water for Plum red. In concentrated sulfuric acid to red light blue, dilution after Plum red; In 10% sodium hydroxide solution for red light purple. Dye aqueous solution to join hydrochloric acid have brown light red precipitation.

Standard	Ironing Fastness	Light Fastness	Fulling		Persperation Fastness	Soaping	Water
			Alkali	Acid
ISO	5	3-4	4		5	4-5	5