dye|World dye variety

Name:C.I.Direct Blue 96,C.I.21620

Molecular Structure: Double azo class

C.I.Direct Blue 96,C.I.21620,CAS 6474-10-3,754.61,C26H17N6Na3O11S3

Molecular Formula:C₂₆H₁₇N₆Na₃O₁₁S₃

Molecular Weight: 754.61

CAS Registry Number:6474-10-3

Manufacturing Methods : 2-Amino-5-nitrobenzenesulfonic acid diazo, in acid conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid acid matches, will the nitro reduction, again diazo, in acid conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid acid coupling

Properties and Applications: green light blue. Soluble in water for blue, not soluble in alcohol. The strong sulfuric acid as dark blue in green, diluted red for purple, have precipitation; In nitric acid for dark red. The dye solution to join strong hydrochloric acid has the purple precipitation; Add sodium hydroxide solution for red light purple.

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