dye|World dye variety

Name:C.I.Food Red 3,C.I.14720

Molecular Structure: Single azo class

C.I.Food Red 3,C.I.14720,CAS 3567-69-9,502.43,C20H12N2Na2O7S2

Molecular Formula:C₂₀H₁₂N₂Na₂O₇S₂

Molecular Weight: 502.43

CAS Registry Number:3567-69-9

Manufacturing Methods : 4-Hydroxynaphthalene-1-sulfonic acid diazo, coupled with the 4-Hydroxynaphthalene-1-sulfonic acid.

Properties and Applications: blu-ray red. Soluble in water for blu-ray red, moderate soluble in alcohol for red, slightly soluble in acetone. The strong sulfuric acid for purple, after diluted magenta precipitation; In nitric acid solution for wine, and then into a red light yellow. The dye solution to join strong hydrochloric acid for red; Add thick sodium hydroxide solution for red light orange brown. And C.I. Acid Red 14 the same chemical structure.

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