Disperse Blue 31

(a) 1,5-Diaminoanthraquinone?in oxalic acid acylation, then in oblate sulfuric acid, and hydrolysis and reduction;

Brilliant Blue

Standard(Polyamide)	Ironing Fastness		Light Fastness	Persperation Fastness		Washing Fastness
	Fading	Stain		Fading	Stain	Fading	Stain
ISO	5	4-5	4	4-5	2	4-5	2