dye|World dye variety

Name:C.I.Direct Red 52,C.I.22290

Molecular Structure: Double azo class

C.I.Direct Red 52,C.I.22290,CAS 6797-93-9,628.52,C29H18N4Na2O8S,Benzo Fast Red GL

Molecular Formula:C₂₉H₁₈N₄Na₂O₈S

Molecular Weight: 628.52

CAS Registry Number:6797-93-9

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, respectively with 2-Hydroxybenzoic acid and 4,7-Dihydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications:  blue-ray red. Soluble in water for red, moderate soluble in alcohol is palm red light orange to orange. In the dark for the strong sulfuric acid, diluted for Shallow red time The dye solution to join strong hydrochloric acid for brown, have precipitation; Add thick sodium hydroxide solution have red precipitate.

List of Suppliers:

Benzo Fast Red GL( Bayer Group )