5-Chloro-3-[[1-(2-chloro-4-sulfophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-2-hydroxybenzenesulfonic acid disodium salt

CAS NO.：6054-91-7
Molecular Weight: 0

What is 5-Chloro-3-[[1-(2-chloro-4-sulfophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-2-hydroxybenzenesulfonic acid disodium salt?

Preparation

3-Amino-5-chloro-2-hydroxybenzenesulfonic acid diazotization, and 3-Chloro-4-(5-hydroxy-3-methyl-1H-pyrazol-1-yl)benzenesulfonic acid coupling.

Properties and Applications

dark yellow red. Soluble in water for titian. In concentrated sulfuric acid for orange red, after diluted solution for yellow, and accompanied by precipitation; In concentrated hydrochloric acid for yellow solution.

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

Safety information for 5-Chloro-3-[[1-(2-chloro-4-sulfophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-2-hydroxybenzenesulfonic acid disodium salt

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