Mordant Black 38

Preparation

3-Amino-5-chloro-2-hydroxybenzenesulfonic acid diazotization, and N-(7-hydroxynaphthalen-1-yl)acetamide coupling.

Properties and Applications

Blue light grey. Soluble in water into wine red to blue light red, slightly soluble in alcohol, not soluble in Acetone. In concentrated sulfuric acid to red light purple, diluted into red orange brown. Dye aqueous solution to join concentrated hydrochloric acid for red wheat brown; Join concentrated sodium hydroxide solution for purple.

Standard	Ironing Fastness	Light Fastness	Fulling		Persperation Fastness	Soaping	Water
			Alkali	Acid
ISO	4	6	4	1	4-5	4-5	5
AATCC	4	6	4-5	4-5	5	4-5	5