dye|World dye variety

Name:C.I.Direct Violet 5,C.I.27660

Molecular Structure: Double azo class

C.I.Direct Violet 5,C.I.27660,CAS 6227-01-6,635.58,C27H19N5Na2O7S2,Benzoviolett RL

Molecular Formula:C₂₇H₁₉N₅Na₂O₇S₂

Molecular Weight: 635.58

CAS Registry Number:6227-01-6

Manufacturing Methods : O-Methylaniline diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications: dark purple. Soluble in water and ethanol for red light purple. The strong sulfuric acid for Tracy in blue, purple for red after diluted. The dye solution to join strong hydrochloric acid has the purple precipitation; Add thick dark for sodium hydroxide solution.

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