C.I. Reactive brown 7

Preparation

7-Amino-4-hydroxynaphthalene-2-sulfonic acid and 2,4,6-Trichloro-1,3,5-triazine condensation, 2-Aminobenzoic acid diazo, and condensation products coupled, again with 2-(2-Sulfo-4-nitrostyryl)-5-aminobenzenesulfonic acid condensation, and translated into chromium complex.

Properties and Applications

red light brown.

Standard	Light Fastness	Oxygen bleaching		Persperation Fastness		Soaping
		Fading	Stain	Fading	Stain	Fading	Stain
ISO	6	5	5	4-5(red)	5	4-5	5