dye|World dye variety

Name:C.I.Solubilised Vat Blue 8,C.I.738001

Molecular Structure: Indigo class

C.I.Solubilised Vat Blue 8,C.I.738001,CAS 4086-05-9,592.34,C20H13Cl2NNa2O9S2

Molecular Formula:C₂₀H₁₃Cl₂NNa₂O₉S₂

Molecular Weight: 592.34

CAS Registry Number:4086-05-9

Manufacturing Methods :  (a) in the presence of Pyridine , with Chlorosulfonic acid treatment C.I. Vat Blue 8 leuco; (b) in the Pyridine with metal (such as copper, iron, zinc, etc) and Sulfur trioxide source (such as Sulfur trioxide, Chlorosulfonic acid or Methyl chlorosulfonate, etc.) processing  C.I. Vat Blue 8. The above two kinds of situation after alkaline, filter out insolubles, remove Pyridine and salting out.

Properties and Applications:  blue to navy blue. Soluble in water.

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