dye|World dye variety

Name:C.I.Solubilised Vat Violet 4 ,C.I.73401

Molecular Structure: Thioindigo class

C.I.Solubilised Vat Violet 4 ,C.I.73401,CAS 4735-07-3,586.98,C20H9ClNa2O8S4,Cibanone Violet 6R

Molecular Formula:C₂₀H₉ClNa₂O₈S₄

Molecular Weight: 586.98

CAS Registry Number:4735-07-3

Manufacturing Methods : (a) in the presence of Pyridine , with Chlorosulfonic acid treatment C.I. Vat Violet 4 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 Violet 4. The above two kinds of situation after alkaline, filter out insolubles, remove Pyridine and salting out.

Properties and Applications: purple.

List of Suppliers:

Cibanone Violet 6R ( Ciba Specialty Chemicals Inc )