5,5'-Dibromo-4,4'-dichloro-2,2'-bi[1H-indole]-3,3'-diol bis(sulfuric acid sodium) salt
- CAS NO.：6537-70-8
- Empirical Formula: C16H9Br2Cl2N2NaO8S2
- Molecular Weight: 675.07
![5,5'-Dibromo-4,4'-dichloro-2,2'-bi[1H-indole]-3,3'-diol bis(sulfuric acid sodium) salt Structural](https://img.chemicalbook.in/CAS/20180808/GIF/6537-70-8.gif)
What is 5,5'-Dibromo-4,4'-dichloro-2,2'-bi[1H-indole]-3,3'-diol bis(sulfuric acid sodium) salt?
Preparation
(a) in the presence of Pyridine , with Chlorosulfonic acid treatment C.I. Vat Blue 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 Blue 2. The above two kinds of situation after alkaline, filter out insolubles, remove Pyridine and salting out.
Properties and Applications
green light blue. Soluble in water
| Standard | Ironing Fastness | Chlorine bleach | Light Fastness | Mercerized | Oxygen bleach | Soaping | |
| Fading | Stain | ||||||
| ISO | 4-5 | 3 | 3-4 | 3 | 2-3 | ||
Safety information for 5,5'-Dibromo-4,4'-dichloro-2,2'-bi[1H-indole]-3,3'-diol bis(sulfuric acid sodium) salt
New Products
Cyclopentane-1,2-dione 8-hydroxy-7-methoxy-2,6-dimethylisoquinolinium iodide Isopropyl amine Hydrochloride 3-Aminophenylacetic acid 2-Bromo-5-iodopyridine 4-isothiocyanato-2-(trifluoroMethyl)benzonitrile Amino-4-methoxyben-zeneacetic acid 1-AMino-cyclobutaneMethanol HCl (RS)-beta-Amino-beta-(4-bromophenyl)propionic acid Cefuroxime EP Impurity-A N-Nitroso hydroxy Cetrizine EP Impurity-A Noradrenaline EP Impurity D/Noradrenaline Methyl Ether Cetirizine EP Impurity A/Cetirizine CBHP Impurity Lantanoprost rc B Clidinium Bromide Impurity 3,4 Diethoxy Benzylcyanide 3,4 Dimethoxy Benzylcyanide valeronitrile 3-Hydroxypropionitrile 4-Bromo Benzylcyanide 3-chlorobenzyl cyanide 1-(3,5-dichlorophenyl)-2,2,2-trifluoroethane-1-sulfonyl chloride S-(1-(3,5-dichlorophenyl)-2,2,2-trifluoroethyl) ethanethioate (2S)-1-((2S,3S)-3-(2-methylbutyl)-4-oxooxetan-2-yl)pentadecan-2-yl formylleucinateRelated products of tetrahydrofuran
![[2,2'-Bi-1H-indole]-3,3'-diol, 5-bromo-, bis(hydrogen sulfate) (ester), disodium salt](https://img.chemicalbook.in/CAS/20200119/GIF/5156-38-7.gif)
![disodium 5-chloro-2-[4-chloro-1-(sulphonatooxy)-2-naphthyl]-7-methoxy-4-methyl-1H-indol-3-yl sulphate](https://img.chemicalbook.in/CAS/GIF/4086-05-9.gif)
![disodium 5,5',7,7'-tetrabromo[2,2'-bi-1H-indole]-3,3'-diyl disulphate](https://img.chemicalbook.in/CAS/20180808/GIF/2702-33-2.gif)
![4,5,5',7,7'-Pentabromo-2,2'-bi[1H-indole]-3,3'-diol bis(sulfuric acid sodium) salt](https://img.chemicalbook.in/CAS/20180808/GIF/10126-84-8.gif)
![[2,2'-Bibenzo[4,5]phenaleno[1,9-bc]thiophene]-5,5'-diol, bis(hydrogen sulfate), disodium salt](https://img.chemicalbook.in/CAS/20211123/GIF/10126-85-9.gif)
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