Solubilised Vat Violet 2
Name:C.I.Solubilised Vat Violet 2,C.I.73386
Molecular Structure: Thioindigo class
C.I.Solubilised Vat Violet 2,C.I.73386,CAS 10126-91-7,599.42,C18H12Cl2Na2O8S4
Molecular Formula:C18H12Cl2Na2O8S4
Molecular Weight: 599.42
CAS Registry Number:10126-91-7
Manufacturing Methods : (a) in the presence of Pyridine , with Chlorosulfonic acid treatment C.I. Vat Violet 2 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 2 . The above two kinds of situation after alkaline, filter out insolubles, remove Pyridine and salting out.
Properties and Applications: brilliant red light purple. Purple powder. Soluble in water for red light purple, phenolphthalein is alkaline, insoluble in Etanol and organic solvent, in light and acid under the action of not easy decomposition. Used for dyeing cotton fabric for brilliant red light purple. In neutral or weak alkaline dyeing bath dyeing. Can be used for cotton fabric of direct, resist, white discharge printing, also can be used for silk and wool dyeing.
| Standard | Ironing Fastness | Chlorine bleach | Light Fastness | Mercerized | Oxygen bleach | Soaping | |
| Fading | Stain | ||||||
| ISO | 5 | 5 | 5 | 4 | 4 | 4 | 5 |
| AATCC | 4 | 5 | 5 | 3-4 | 4 | ||
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