2475-31-2
Cibablue
CAS: 2475-31-2
Molecular Formula: C16H6Br4N2O2
2475-31-2 - Names and Identifiers
| Name | Cibablue |
| Synonyms | 04BS Cibablue C.I. 73065 Vat Blue 5 Ciba blue 2B Convat Blue E Arlanon Blue 2B C.I. Vat Blue 5 Bromo Indigo 2B Tetrabromoindigo BASF brilliant indigo Kambanthrene bndigo 4B Vat blue 5 (C.I. 73065) Pigment organic indigo blue bromindigo EINecs (2Z)-5,5',7,7'-tetrabromo-2,2'-biindole-3,3'(1H,1'H)-dione (2E)-5,5',7,7'-tetrabromo-2,2'-biindole-3,3'(1H,1'H)-dione |
| CAS | 2475-31-2 |
| EINECS | 219-598-1 |
| InChI | InChI=1/C16H6Br4N2O2/c17-5-1-7-11(9(19)3-5)21-13(15(7)23)14-16(24)8-2-6(18)4-10(20)12(8)22-14/h1-4,21-22H/b14-13- |
2475-31-2 - Physico-chemical Properties
| Molecular Formula | C16H6Br4N2O2 |
| Molar Mass | 577.85 |
| Density | 2.5583 (rough estimate) |
| Boling Point | 563.4±50.0 °C(Predicted) |
| Flash Point | 294.5°C |
| Vapor Presure | 1.02E-12mmHg at 25°C |
| pKa | -7.15±0.20(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.6300 (estimate) |
| Physical and Chemical Properties | Dark blue powder. Insoluble in water, ethanol, soluble in xylene, tetralin, nitrobenzene. Blue Green in concentrated sulfuric acid, diluted blue, and produce a blue precipitate. It is yellow in the alkaline solution of sodium hydrosulfite and light yellow in the acidic solution. |
2475-31-2 - Risk and Safety
| RTECS | NM3259100 |
2475-31-2 - Reference Information
| color index | 73065 |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | reduced bromoindigo is suitable for dyeing cotton, viscose fiber, silk, wool and printing cotton cloth, with good levelness and affinity. It is also used for dyeing vitamin cotton blended fabrics, as well as for preparing ink pigments and for plastic coloring. It is mainly used for dyeing and printing of cotton fabrics, and can also be used as oil paint and plastic coloring |
| production method | indigo (C.I .73000) is used as raw material, brominated with bromine in sulfuric acid, diluted and boiled with sodium hydroxide, and finally filtered, washed, dried and crushed to obtain the finished product.. |
Last Update：2024-04-10 22:29:15
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View History
2475-31-2
Pneumocandin
1,2-BUTADIENE
5-Bromoindole
7-Benzothiazolamine
738-87-4
52210-93-2
1875-98-3
Extracts of Veratrum aldehyde
P.R.146
Pneumocandin
1,2-BUTADIENE
5-Bromoindole
7-Benzothiazolamine
738-87-4
52210-93-2
1875-98-3
Extracts of Veratrum aldehyde
P.R.146