6470-20-8

2,2′-Disulfo-4,4,diaminobibenzene double nitriding, respectively, and 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one and Naphthalen-2-ol coupling.

red light orange. Soluble in water for palm orange, soluble in ethanol for gold orange: the strong sulfuric acid for blood-red, diluted for orange brown. The dye solution to join strong hydrochloric acid have orange brown precipitation; Add thick sodium hydroxide solution for orange brown. Used for wool, silk and fiber dyeing and printing directly, also used for paper coating and leather shading.

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