dye|World dye variety

Name:C.I.Direct Yellow 2,C.I.23640

Molecular Structure: Double azo class

C.I.Direct Yellow 2,C.I.23640,CAS 6459-95-6,554.46,C28H20N4Na2O6

Molecular Formula:C₂₈H₂₀N₄Na₂O₆

Molecular Weight: 554.46

CAS Registry Number:6459-95-6

Manufacturing Methods : 3,3′-Dimethylbenzidine double nitriding, and 2-Hydroxybenzoic acid(2 Moore) coupled.

Properties and Applications: yellow. Yellow powder. Soluble in water and ethanol is yellow. The strong sulfuric acid to red light purple, diluted for shallow lemon yellow. The dye solution to join strong hydrochloric acid for olive yellow, precipitation; Add thick sodium hydroxide solution for orange, precipitation. Used for the cellulose fibre and wool dyeing, discharge the gender is good.

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