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Direct Violet 5

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

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.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 3 5 3 1-2 1-2

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