4-hydroxy-1-methyl-3-[(3-nitrophenyl)azo]-2-quinolone

Yellow powder. Insoluble in water, soluble in ethanol, acetone, benzene, carbon tetrachloride, ethylene glycol ethyl ether, slightly soluble in Staudt's solvent. Golden yellow in concentrated sulfuric acid, yellow after dilution. Color unchanged in concentrated nitric acid. Orange-yellow solution in concentrated sodium hydroxide solution.

M-nitroaniline diazo, and 4-Hydroxy-1-methylquinolin-2(1H)-one?coupling

Green light yellow. Yellow powder. Insoluble in water and soluble in alcohol benzene soluble fiber element and acetone carbon tetrachloride, slightly soluble in special solvent, tao. The strong sulfuric acid to golden yellow, yellow as diluted, nitrate in thick

Standard	Ironing Fastness		Light Fastness	Persperation Fastness		Washing Fastness
	Fading	Stain		Fading	Stain	Fading	Stain
ISO	4-5	4	5-6	5	3	5	5