2-Naphthalenesulfonic acid, 5-[2-(4-chlorophenyl)diazenyl]-6-hydroxy-, sodium salt (1:1)

4-Chlorobenzenamine diazo, and 6-Hydroxynaphthalene-2-sulfonic acid coupling.

bright orange. Soluble in water and ethanol for red orange, easily soluble in soluble fiber element. In the strong sulfuric acid to orange for yellow orange after diluted. The dye solution to join 10% sulfuric acid as orange; Add 10% sodium hydroxide solution for orange brown. Used for wool, silk fiber dyeing, etc.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
AATCC	6	2		2			2-3