sodium [6-amino-5-[(2-hydroxy-4-nitrophenyl)azo]naphthalene-1-sulphonato(3-)]hydroxychromate(1-)

2-Amino-5-nitrophenol diazo, and 6-Aminonaphthalene-1-sulfonic acid?coupling, then use formic acid chromium processing.

blue light green. Variegated dark green powder. Soluble in water and ethanol (a green), slightly soluble in soluble fiber element. Meet strong sulfuric acid is blue light red, it will be diluted from blue to green solution. Its water solution meet 10% sodium hydroxide solution without change color. Used for wool, silk and polyamide fiber of dyeing and printing, also used in leather, paper dyeing and electrochemical aluminum color. Especially for the influential wool carpet and color.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	5-6	3-4	4	4	2		3-4
AATCC	5	3	3	4	1		3-4