dye|World dye variety

Name:C.I.Mordant Violet 25,C.I.45445

Molecular Structure: Xanthene class

C.I.Mordant Violet 25,C.I.45445,CAS 2103-64-2,364.31,C20H12O7

Molecular Formula:C₂₀H₁₂O₇

Molecular Weight: 364.31

CAS Registry Number:2103-64-2

Manufacturing Methods : 3,4,5-Trihydroxybenzoic acid or Benzene-1,2,3-triol and Phthalic anhydride in 190 ~ 200 ℃ reaction (namely GALLEIN), and then into sodium salt namely Alizarine Violet.

Properties and Applications: blue light purple. Free acid soluble in hot water for the big red, soluble in hot ethanol for red light brown. In concentrated sulfuric acid to red light yellow, after dilution with fluorescence red yellow precipitation. Dye aqueous solution to join sodium hydroxide as blue.

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