2-Hydroxy-5-[[4-[(4-hydroxy-3-nitro-5-sodiosulfophenyl)azo]-5-methyl-2-methoxyphenyl]azo]-3-methylbenzoic acid sodium salt

Preparation

2-Hydroxy-3-nitro-5-aminobenzenesulfonic acid diazotization, and 2-Amino-4-methylanisole coupling, product to diazotization, and 2-Hydroxy-3-methylbenzoic acid coupling.

Properties and Applications

dark red. Soluble in water for orange brown, slightly soluble in ethanol for shallow peachblossom. In concentrated sulfuric acid for dark blue, yellow light olive for after diluted. Dye aqueous solution to join concentrated hydrochloric acid for brown light yellow, Join strong caustic for red sauce.

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