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Solubilised Vat Blue 3

Name:C.I.Solubilised Vat Blue 3,C.I.73056

Molecular Structure: Indigo class

C.I.Solubilised Vat Blue 3,C.I.73056,CAS 5156-38-7,547.27,C16H9BrN2Na2O8S2

C.I.Solubilised Vat Blue 3,C.I.73056,CAS 5156-38-7,547.27,C16H9BrN2Na2O8S2

Molecular Formula:C16H9BrN2Na2O8S2

Molecular Weight: 547.27

CAS Registry Number:5156-38-7

Manufacturing Methods :  (a) in the presence of  Pyridine , with Chlorosulfonic acid treatment C.I. Vat Blue 3 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 3. The above two kinds of situation after alkaline, filter out insolubles, remove Pyridine and salting out.

Properties and Applications:  red light blue. Soluble in water is blue.

Standard Ironing Fastness Chlorine bleach Light Fastness Mercerized Oxygen bleach Soaping
Fading Stain
ISO 4 3 3-4 4 3-4

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