dye|World dye variety

Name:C.I.Acid Red 29,C.I.16570

Molecular Structure: Single azo class

C.I.Acid Red 29,C.I.16570,CAS 4197-07-3,468.37,C16H10N2Na2O8S2

Molecular Formula:C₁₆H₁₀N₂Na₂O₈S₂

Molecular Weight: 468.37

CAS Registry Number:4197-07-3

Manufacturing Methods : aniline diazo, and 4,5-Dihydroxynaphthalene-2,7-disulfonic acid coupling.

Properties and Applications: red. Soluble in water for red orange, soluble in soluble fiber element, moderate soluble in alcohol and acetone is red light purple, insoluble in other organic solvents. The strong sulfuric acid for wine red, diluted into pink; In nitric acid solution for red, and then to orange. Add hydrochloric acid in aqueous solution for the red orange; Add thick sodium hydroxide solution for deep red wine.

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