Direct Dyes Direct Violet 35

C.I.Direct Violet 35
,C.I.27915,CAS 6227-20-9,843.75,C34H24N5Na3O11S3,Brilliant Congo Blue 5R,Brilliant Violet 5BFN,Direct Paper Violet BL

Molecular Formula:C₃₄H₂₄N₅Na₃O₁₁S₃

Molecular Weight: 843.75

CAS Registry Number:6227-20-9

Manufacturing Methods : 3-Aminonaphthalene-1,5-disulfonic aciddiazo, and 2-Amino-4-methylanisole coupling, its product to diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications:  blue purple. Soluble in water for deep purple, and adequate soluble in ethanol for red light purple. The strong sulfuric acid for Tracy in blue, blue for red after diluted. The dye solution to join strong hydrochloric acid blue precipitation; Add thick sodium hydroxide solution has the purple precipitation. Used for cellulose fiber dyeing and printing of, also can used for the paper color.

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