[2,2'-Bi-1H-indole]-3,3'-diol, 5-bromo-, bis(hydrogen sulfate) (ester), disodium salt
[2,2'-Bi-1H-indole]-3,3'-diol, 5-bromo-, bis(hydrogen sulfate) (ester), disodium salt Basic information
- Product Name:
- [2,2'-Bi-1H-indole]-3,3'-diol, 5-bromo-, bis(hydrogen sulfate) (ester), disodium salt
- Synonyms:
-
- [2,2'-Bi-1H-indole]-3,3'-diol, 5-bromo-, bis(hydrogen sulfate) (ester), disodium salt
- C.I.Solubilised Vat Blue 3:C.I.73056
- Solubilised Vat Blue 3
- CAS:
- 5156-38-7
- MF:
- C32H22Br2N4Na2O16S4
- MW:
- 1052.58182
- EINECS:
- 610-692-1
- Mol File:
- 5156-38-7.mol
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[2,2'-Bi-1H-indole]-3,3'-diol, 5-bromo-, bis(hydrogen sulfate) (ester), disodium salt Usage And Synthesis
Preparation
(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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[2,2'-Bi-1H-indole]-3,3'-diol, 5-bromo-, bis(hydrogen sulfate) (ester), disodium salt(5156-38-7)Related Product Information
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