3618-60-8

3-Amino-5-chloro-2-hydroxybenzenesulfonic acid diazotization, and Naphthalene-1,5-diol?coupling.

blue black. Soluble in water for red light purple to bordeaux red, slightly soluble in ethanol and Acetone as dark blue light red to magenta. In concentrated sulfuric acid to blue light purple to black, dilution after dark red wine. Dye aqueous solution with concentrated hydrochloric acid for brown light red precipitation; Join concentrated sodium hydroxide solution for purple.

Standard	Ironing Fastness	Light Fastness	Fulling		Persperation Fastness	Soaping	Water
			Alkali	Acid
ISO	4-5	7-8	5	4-5	5	5	5
AATCC	5	7	5		5	5	5