Solubilised Vat Blue 5
Name:C.I.Solubilised Vat Blue 5 ,C.I.73066
Molecular Structure: Indigo class
C.I.Solubilised Vat Blue 5,C.I.73066,CAS 2702-33-2,783.96,C16H6Br4N2Na2O8S2,Solubilised Vat Blue O4B,Algosol Blue O4B
Molecular Formula:C16H6Br4N2Na2O8S2
Molecular Weight: 783.96
CAS Registry Number:2702-33-2
Manufacturing Methods : (a) in the presence of Pyridine , with Chlorosulfonic acid treatment C.I. Vat Blue 5 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 5. The above two kinds of situation after alkaline, filter out insolubles, remove Pyridine and salting out.
Properties and Applications: blue. Light gray powder. Soluble in water is blue, the acid brilliant is basic, in light and acid under the action of rapid decomposition, make the solution is blue. In concentrated sulfuric acid for cyan. When color oxidation more difficult, low temperature issued color not fully. Mainly used for cotton fabric dyeing and printing, also used for silk and polyester/cotton blended fabric dyeing and printing, but also can be used to hand printed.
| Standard | Ironing Fastness | Chlorine bleach | Light Fastness | Mercerized | Oxygen bleach | Soaping | |
| Fading | Stain | ||||||
| ISO | 5 | 2 | 4-5 | 4 | 3-4 | 4-5 | 5 |
| AATCC | 5 | 2 | 4-5 | 3-4 | 4 | ||
List of Suppliers:
Solubilised Vat Blue O4B
Algosol Blue O4B( Standard Dyes )