dye|World dye variety

Name:C.I.Food Red 5,C.I.16150

Molecular Structure: Single azo class

C.I.Food Red 5,C.I.16150,CAS 3761-53-3,480.42,C18H14N2Na2O7S2

Molecular Formula:C₁₈H₁₄N₂Na₂O₇S₂

Molecular Weight: 480.42

CAS Registry Number:3761-53-3

Manufacturing Methods :2,4-Dimethylbenzenamine diazo, coupled with 3-Hydroxynaphthalene-2,7-disulfonic acid.

Properties and Applications:  light yellow and red to red. Soluble in water for red light orange to red, slightly soluble in ethanol and acetone, insoluble in other organic solvents. The strong sulfuric acid for cherry red to product red, diluted red for yellow; In nitric acid solution for orange. The dye solution to join strong hydrochloric acid have red precipitate; Add thick sodium hydroxide solution for orange brown; And 10% sodium hydroxide solution palm red light; Add nitric acid for colourful red, to orange. And C. I.Acid red 26 and the same chemical structure.

List of Suppliers:

Daiwa Ponceau R( Kaseihin Kogyo Kyokai )

Devar Ponceau R( Devarsons Industries Ltd )