Acid Violet 7 in Acid and Leather Dyes

Molecular Formula: C20H16N4Na2O9S2
Molecular Weight: 566.47
CAS Registry Number: 4321-69-1
Manufacturing Methods:
N-(4-aminophenyl)acetamide diazo, and 4-Acetamido-5-hydroxynaphthalene-2, 7-disulfonic acid coupling.
Properties and Applications:
Red light purple. Deep red powder. Soluble in water is blue light red to red. Slightly soluble in ethanol, acetone and soluble fiber element, insoluble in other organic solvents. Meet strong sulfuric acid is blue light red, diluted is bright red; Meet nitric acid solution for scarlet toorange. Its solution and strong hydrochloric acid is product red; Add sodium hydroxide solution is orange brown. Dyeing copper and iron ion in its colour and lustre the former micro blue dark, the latter slightly shallow, encounter chromium ion little influence. Good levelness. Used for wool, silk, polyamide fiber and leather, paper, soap, wood, medicine and cosmetics of dyeing, can also be used for the biological dyeing.