CHLORAZOL VIOLET N

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, in acid conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? (2 Moore) coupled.

Properties and Applications

purple. Reddish brown powder. Soluble in water for deep purplish red color to purple solution, soluble in soluble fiber element, slightly soluble in alcohol for red light purple, insoluble in other organic solvents. In the strong sulfuric acid as dark blue, diluted for dark purple; In nitric acid for brown in the red. The dye solution to join strong hydrochloric acid for purple, have precipitation; Add thick sodium hydroxide solution for Red sauce, precipitation. Cellulose fiber of dyeing, dye absorption rate of as good, in the 100 ℃ maximum affinity. Copper ions in dyeing color shade darker, encounter iron ion micro have change. Mainly used for cotton, such as glue of cellulose fiber dyeing and printing, also can be used for silk, polyamide fiber and its blended fabric dyeing, can also be used for the pulp, leather and biological color.