disodium 8-[[4-(acetylcyclohexylamino)phenyl]azo]-7-hydroxynaphthalene-1,3-disulphonate

Preparation

N-(4-aminophenyl)-N-cyclohexylacetamide diazo, and 7-Hydroxynaphthalene-1,3-disulfonic acid coupling.

Properties and Applications

bright orange. Soluble in water and ethanol for gold orange. The strong sulfuric acid for gold in orange, diluted into gold. The aqueous solution of dye with strong hydrochloric acid for gold orange; Add thick sodium hydroxide solution for red light orange brown. Used for wool, silk fiber dyeing etc, also used in leather dyeing.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	4-5	3-4	3	4-5	1	5	4	3
AATCC	5-6	4	4	1			4-5	4-5