dye|World dye variety

Name:C.I.Direct Red 43,C.I.22205

Molecular Structure: Double azo class

C.I.Direct Red 43,C.I.22205,CAS 6486-50-6,814.71,C32H21N6Na3O10S3,Benzo FastRed 9BL

Molecular Formula:C₃₂H₂₁N₆Na₃O₁₀S₃

Molecular Weight: 814.71

CAS Registry Number:6486-50-6

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first coupling with 3-Aminonaphthalene-2,7-disulfonic acid, and then in acid conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid acid coupling.

Properties and Applications: red. Soluble in water for red, slightly soluble in alcohol for pink. The strong sulfuric acid in blue, diluted dark for. The dye solution to join strong hydrochloric acid for dark purple and dark, precipitation; With strong sodium hydroxide solution for red orange.

List of Suppliers:

Benzo FastRed 9BL( Bayer Group )