trisodium [mu-[2-[[1-hydroxy-6-[[[[5-hydroxy-6-[(2-hydroxy-5-sulphophenyl)azo]-7-sulpho-2-naphthyl]amino]carbonyl]amino]-3-sulpho-2-naphthyl]azo]benzoato(7-)]]dicuprate(3-)

Preparation

2-Aminobenzoic acid?diazo, coupled with N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea, 3-Amino-4-hydroxybenzenesulfonic acid?diazo, and generated coupled product matches, and then into copper complex.

Properties and Applications

red to blue light Claret. Purple powder, soluble in water for dark purple. The strong sulfuric acid dyes for dark purple solution, diluted into red, precipitation. Its water solution to join 10% sodium hydroxide solution colour and lustre after basically unchanged. In dyeing copper and iron ion colored light basic unchanged. Mainly used for cotton, viscose and their blended fabric dyeing and printing, and can also be used for leather and paper color.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	3-4	4	7	3-4		3
AATCC	3	5	5-6	3