dye|World dye variety

Name:C.I.Direct Blue 215,C.I.24415

Molecular Structure: Double azo class

C.I.Direct Blue 215,C.I.24415,CAS 6771-80-8,966.86,C40H29N6Na3O13S3,Direct Copper Blue GR

Molecular Formula:C₄₀H₂₉N₆Na₃O₁₃S₃

Molecular Weight: 966.86

CAS Registry Number:6771-80-8

Manufacturing Methods : 3,3′-Dimethoxylbenzidine double nitriding, first and 4-Amino-5-hydroxynaphthalene-1,3-disulfonic acid, and then in three alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications: green light blue. Soluble in water for blue purple, and adequate soluble in alcohol. The strong sulfuric acid for Tracy in blue, and in purple for diluted. The dye solution to join strong hydrochloric acid for red light blue; Add thick sodium hydroxide solution for dark purple, have precipitation.

List of Suppliers:

Atul Direct Copper Blue GR( Atul Limited  )