2,3,5-Tribromothiophene
2,3,5-Tribromothiophene
CAS: 3141-24-0
Molecular Formula: C4HBr3S
2,3,5-Tribromothiophene - Names and Identifiers
| Name | 2,3,5-Tribromothiophene |
| Synonyms | S0507 AI3-62838 NSC 263503 2,3,5-Tribromothioph 2,3,5-Tribromothiophene 2,3,5-tribromo-thiophen 2,3,5-TRIBROMOTHIOPHENE Thiophene,2,3,5-tribromo- Thiophene, 2,3,5-tribromo- |
| CAS | 3141-24-0 |
| EINECS | 221-544-7 |
| InChI | InChI=1/C4HBr3S/c5-2-1-3(6)8-4(2)7/h1H |
2,3,5-Tribromothiophene - Physico-chemical Properties
| Molecular Formula | C4HBr3S |
| Molar Mass | 320.83 |
| Density | 2.483 g/mL at 25 °C (lit.) |
| Melting Point | 25-28 °C (lit.) |
| Boling Point | 120 °C/11 mmHg (lit.) |
| Flash Point | >230°F |
| Vapor Presure | 0.0203mmHg at 25°C |
| Appearance | solid |
| Specific Gravity | 2.483 |
| BRN | 111486 |
| Storage Condition | Keep in dark place,Inert atmosphere,2-8°C |
| Refractive Index | n20/D 1.664(lit.) |
2,3,5-Tribromothiophene - Risk and Safety
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 2929 6.1/PG 2 |
| WGK Germany | 3 |
| TSCA | T |
| HS Code | 29349990 |
| Hazard Class | 6.1 |
2,3,5-Tribromothiophene - Reference Information
| production method | 80mL chloroform and 168.2g thiophene are added into the reactor, 960g of liquid bromine is slowly added dropwise at 30 ℃ and under stirring, the reaction starts immediately and a large amount of hydrogen bromide gas escapes, and the dropwise addition is completed in about 4 hours. The reactants are heated and refluxed for 2h, cooled to room temperature, 50 mL2mol/L sodium hydroxide and 205mL 95% ethanol are added to the reactants respectively, and stirred for 10min. Inject the reaction mixture into 400mL of water to separate the organic phase, dry with anhydrous magnesium sulfate, filter, and evaporate the solvent in the filtrate. 423.6g of fraction at 109~110 ℃(95.2Pa) was collected by vacuum distillation with 66% yield. |
| EPA chemical information | information provided by: ofmpub.epa.gov (external link) |
Last Update：2024-04-10 22:29:15
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