ACID BLUE 40

The Uses of ACID BLUE 40

Acid Blue 40 is an anthraquinone dye.

What are the applications of Application

Acid Blue 40 is an anthraquinone dye

Preparation

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.

Properties and Applications

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.