dye|World dye variety

Name:C.I.Acid Red 13,C.I.16045

Molecular Structure: Single azo class

C.I.Acid Red 13,C.I.16045,CAS 2302-96-7,502.43,C20H12N2Na2O7S2,Fast Red E

Molecular Formula:C₂₀H₁₂N₂Na₂O₇S₂

Molecular Weight: 502.43

CAS Registry Number:2302-96-7

Manufacturing Methods :  4-Aminonaphthalene-1-sulfonic acid diazo, and 6-Hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications: red. Soluble in water is cherry red, slightly soluble in ethanol (the pale of the red light purple), almost insoluble in acetone. Strong sulfuric acid in purple, will have its dilution cherry red (produced orange precipitation); Meet nitric acid for yellow light red. Its water solution with hydrochloric acid for yellow orange; Add thick sodium hydroxide solution for orange light brown. Used for wool, silk dyeing, can also be used for the feathers, paper, soap, leather, wood, cosmetics and pharmaceutical color.

List of Suppliers:

Daiwa Fast Red E( Kaseihin Kogyo Kyokai )

Fast Red E ( Warner-Jenkinson Co )