trisodium [7-[[4-[[4-[[4-[[2,4-dihydroxy-5-[(2-hydroxy-5-sulphophenyl)azo]phenyl]azo]benzoyl]amino]-o-tolyl]azo]-o-tolyl]azo]naphthalene-1,3-disulphonato(5-)]cuprate(3-)

3-Amino-4-hydroxybenzenesulfonic acid diazo, and Resorcinol coupling, in 30 ℃ with water cut copper sulfate processing, get copper complex as coupling components; 7-Aminonaphthalene-1,3-disulfonic acid diazo, and m-Toluidine coupling, again diazo, and m-Toluidine coupling, and then and 4-Nitrobenzoyl chloride?condensation, will the nitro reduction for both the amino nitrogen, and the generation of coupling components coupling.

yellow light brown. Soluble in water for orange brown, soluble in ethanol. The strong sulfuric acid in red for brown + purple, for yellow brown after diluted. The dye solution to join strong hydrochloric acid for olive brown, have precipitation; Add thick sodium hydroxide solution for orange brown, have precipitation.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	3	4	5	2		2
AATCC	5	4	4	1		2