Chromate(3-), bis[3-[[5-(1,1-dimethylethyl)-2-(hydroxy-κO)phenyl]azo-κN1]-2-(hydroxy-κO)-5-nitrobenzenesulfonato(3-)]-, dipotassium hydrogen

Preparation

3-Amino-2-hydroxy-5-nitrobenzenesulfonic acid diazo, potassium hydroxide in the presence of and of 4-Tert-butylphenol?coupling, then use formic acid chromium processing, make its formed chromium complex

Properties and Applications

red light brown. Soluble in water for brown, soluble in ethanol, slightly soluble in soluble fiber element. The strong sulfuric acid for yellow brown, red brown after diluted; In nitric acid partly dissolved, for red brown; In 10% of sulfuric acid partly dissolved for red brown; In 10% of sodium hydroxide solution in a part of the solution, for red brown.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	6	4	3	4	2		3-4
AATCC	6-7	3	3	5			3