dye|World dye variety

Name:C.I.Direct Violet 57,C.I.27865

Molecular Structure: Double azo class

C.I.Direct Violet 57,C.I.27865,CAS 6227-12-9,843.75,C34H24N5Na3O11S3,Chlorantine Fast Violet 8BLL

Molecular Formula:C₃₄H₂₄N₅Na₃O₁₁S₃

Molecular Weight: 843.75

CAS Registry Number:6227-12-9

Manufacturing Methods :  4-Amino-5-hydroxynaphthalene-2,7-disulfonic aciddiazo, and 2,5-Dimethylbenzenamine coupling, its product to diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications: blue purple. Soluble in water for blue purple, slightly soluble in alcohol. The strong sulfuric acid for green light blue, purple precipitation after diluted. The dye solution to join strong hydrochloric acid has the purple precipitation; Add thick sodium hydroxide solution for purple.

List of Suppliers:

Chlorantine Fast Violet 8BLL ( Ciba Specialty Chemicals Inc )