Vat Red 20

2-Amino-3-chloroanthracene-9,10-dione and 1-Nitro-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid condensation, reduction, and then into a sulfhydryl derivatives, and cyclization.

blue light red to red light purple. In the basic insurance powder solution for brown light olive; In the acidic insurance powder solution for orange.

Standard	Ironing Fastness	Chlorine bleach	Light Fastness	Mercerized	Oxygen bleach	Soaping
						Fading	Stain
ISO	4-5	5	7	5	4-5	4-5	5