tetrasodium [4-acetamido-5-hydroxy-6-[[2-hydroxy-4-[[4-[2-[4-[(4-methoxyphenyl)azo]-2-sulphophenyl]vinyl]-3-sulphophenyl]azo]-6-sulpho-1-naphthyl]azo]naphthalene-1-sulphonato(6-)]cuprate(4-)

Preparation

2-(2-Sulfo-4-nitrostyryl)-5-aminobenzenesulfonic acid diazo, coupled with phenol, then methylation, will the Nitro reduction, product diazo, and 5-Amino-7-ehtoxy-2-naphthalenesulfonic acid coupling, its product to diazo, and 8-Acetamido-1-naphthol-5-sulfonic acid coupling, and finally into copper complex. In the copper complexation processes,?ethoxy group may be substituted with hydroxy.

Properties and Applications

olive green. Soluble in water for Yellow olive green, not soluble in alcohol. The strong sulfuric acid to red light brown, diluted red for sauce. The dye solution with strong hydrochloric acid have blue-ray gray precipitation; Add thick sodium hydroxide solution have olive green precipitation.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	3	3-4	6	3		3