1681-60-3

(a) 4-Nitrobenzenamine diazo, and 4,5-Dihydroxynaphthalene-2,7-disulfonic acid?coupling (C.I.Acid Red 176, C.I. 16575), then will the nitro reduction; (b) N-(4-aminophenyl)acetamide?diazo, and 4,5-Dihydroxynaphthalene-2,7-disulfonic acidcoupling (C.I.Acid Violet 6, C.I.16600), then acetyl hydrolysis.

blue purple. Soluble in water for blue purple, hardly soluble in ethanol and soluble fiber element. The strong sulfuric acid for blue-ray in red, for wine red after diluted. In nitric acid solution for wine red, in strong hydrochloric acid for chestnut solution; In 10% of sodium hydroxide solution for chestnut solution. In water solution to join hydrochloric acid for red; Join gas oxidation sodium for red orange brown.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	2	2-3	4	2-3	2	5	1
AATCC	4	2-3	2-3	1	3	3	3	3