Acid Black 1 for leather dyeing

-

Acid Black 1 for leather dyeing

Name:C.I.Acid Black 1

C.I.20470

Molecular Structure: Double azo class

Molecular Formula:C₂₂H₁₄N₆Na₂O₉S₂

Molecular Weight: 616.49

CAS No.1064-48-8

Properties:  

-blue and black. Dark brown powder. 

-A blue-black soluble in water, soluble in ethanol is blue, slightly soluble in acetone, insoluble in other organic solvents. 

-Meet strong sulfuric acid is blue light green, the bright blue light generated after diluted precipitation; Nitric acid solution in a dark after Red sauce for change, and it will generate dark green light blue after diluted precipitation; Nitric acid solution in a dark red to sauce; 10% sodium hydroxide solution in a bright blue. 

-It with strong hydrochloric acid aqueous solution of the generation of green light blue precipitation; Add sodium hydroxide solution generation blue precipitation. 

-In dyeing copper and iron ion, its colour and lustre is the former micro change, the latter slightly with green light. Even dye the gender is poorer. 

-Mainly used for wool, silk, polyamide fiber and its blended fabric dyeing and printing, also can be used for paper, electrical-controlled aluminum, soap, wood, biological, leather, medicine and cosmetics shading, also can be used in the manufacture of ink.

Applications: