Chromate(1-), [5-[[5-chloro-2-(hydroxy-κO)phenyl]azo-κN1]-4-hydroxy-6-(hydroxy-κO)-2-naphthalenesulfonato(3-)]hydroxy-, sodium

CAS NO.：6408-19-1
Empirical Formula: C16H8ClCrN2NaO7S
Molecular Weight: 482.74
EINECS: 613-443-5

What is Chromate(1-), [5-[[5-chloro-2-(hydroxy-κO)phenyl]azo-κN1]-4-hydroxy-6-(hydroxy-κO)-2-naphthalenesulfonato(3-)]hydroxy-, sodium?

Preparation

2-Amino-4-chlorophenol diazo, and 4,6-Dihydroxynaphthalene-2-sulfonic acid coupling, and then will product with aqueous acid chromium common heating, in 115 ℃ keep 4.5 hours, make its formed chromium complex.

Properties and Applications

black. Used for wool, polyamide fiber dyeing and printing.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
Standard	Light Fastness	Fading	Stain	Persperation Fastness	Fading	Stain	Fading	Stain
ISO	5	4	5	3	1-2	5	5

Safety information for Chromate(1-), [5-[[5-chloro-2-(hydroxy-κO)phenyl]azo-κN1]-4-hydroxy-6-(hydroxy-κO)-2-naphthalenesulfonato(3-)]hydroxy-, sodium

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