dye|World dye variety

Name:C.I.Direct Violet 6,C.I.25385

Molecular Structure: Double azo class

C.I.Direct Violet 6,C.I.25385,CAS 6771-82-0,1066.89,C39H26N8Na4O15S4,Direct Light Violet 5R

Molecular Formula:C₃₉H₂₆N₈Na₄O₁₅S₄

Molecular Weight: 1066.89

CAS Registry Number:6771-82-0

Manufacturing Methods :  1,3-Bis(4-amino-3-sulfophenyl)urea double nitriding, first in acid conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid coupled, then in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications:  red light purple. Soluble in water for product red, slightly soluble in alcohol. The strong sulfuric acid for red sauce, diluted for purple. The dye solution to join strong hydrochloric acid for purple, have precipitation; Add thick Red sauce sodium hydroxide solution for wine Red, have precipitation.

List of Suppliers:

Direct Light Violet 5R( S A des Ets. Steiner )