6424-85-7

Acid Blue 40 is an anthraquinone dye.

1-Amino-4-bromo-9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid and N-(4-aminophenyl)acetamide in copper salt and tied the presence of acid agents condensation, and then into sodium salt.

green light blue. Dark blue powder, soluble in water, solubility in water (80 ℃) 100 g/L, water solution is blue. Soluble in acetone and ethanol, slightly soluble in nitrobenzene, insoluble in benzene and dimethyl benzene, encounter the dark brown color of sulfuric acid, a product after diluted red; In the hydrochloric acid and sodium hydroxide solution discoloration. Mainly used for wool, polyamide fiber and silk dyeing and printing, also can be used for leather color.

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