2-[Butyl[4-[(2,4-dinitrophenyl)azo]-3-methylphenyl]amino]ethanol

2,4-Dinitrobenzenamine diazo, and 3-Methyl-N-butyl-N-hydroxyethylaniline?coupling.

bright purple. Soluble in ethanol and acetone is a deep red, soluble in benzene and pottery, especially solvent. The strong sulfuric acid for brown, diluted for blu-ray red; In the thick of the same color sodium hydroxide solution.

Standard(Vinegar fiber)	Ironing Fastness		Light Fastness	Persperation Fastness		Washing Fastness
	Fading	Stain		Fading	Stain	Fading	Stain
C			4	4		3-4