2-溴-2-甲基丙酰溴(2-溴异丁酰溴)
2-Bromoisobutyryl bromide
CAS: 20769-85-1
Molecular Formula: C4H6Br2O
2-溴-2-甲基丙酰溴(2-溴异丁酰溴) - Names and Identifiers
| Name | 2-Bromoisobutyryl bromide |
| Synonyms | A-BROMOISOBUTYRYL BROMIDE 2-Bromoisobutyryl bromide 2-bromoisobutylyl bromide α-Bromoisobutyryl bromide BROMOISOBUTYRYL(2-) BROMIDE ALPHA-BROMOISOBUTYRYL BROMIDE 2-Bromo-2-methylpropanoyl bromide |
| CAS | 20769-85-1 |
| EINECS | 244-017-3 |
| InChI | InChI=1/C4H6Br2O/c1-4(2,6)3(5)7/h1-2H3 |
2-溴-2-甲基丙酰溴(2-溴异丁酰溴) - Physico-chemical Properties
| Molecular Formula | C4H6Br2O |
| Molar Mass | 229.898 |
| Density | 1.946g/cm3 |
| Boling Point | 163°C at 760 mmHg |
| Flash Point | 61.8°C |
| Water Solubility | reacts |
| Vapor Presure | 2.11mmHg at 25°C |
| Appearance | Form Liquid, color Clear light yellow to yellow |
| Storage Condition | Store below +30°C. |
| Refractive Index | 1.522 |
| Physical and Chemical Properties | Chemical red liquid. Boiling point 162-164 ℃, relative density 1.860, refractive index 1.5080. Soluble in halogenated hydrocarbons, decompose in water and alcohol. |
| Use | Uses Organic synthesis intermediates. |
2-溴-2-甲基丙酰溴(2-溴异丁酰溴) - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3265 |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29159080 |
| Hazard Class | 8 |
| Packing Group | II |
2-溴-2-甲基丙酰溴(2-溴异丁酰溴) - Upstream Downstream Industry
2-溴-2-甲基丙酰溴(2-溴异丁酰溴) - Nature
| Solubility | Miscible with acetone and carbon disulfide. |
| Specific gravity | 1.860 (20/4℃) |
| Sensitivity | Moisture Sensitive |
| BRN | 1746128 |
| NIST chemical information | Propanoyl bromide, 2-bromo-2-methyl-(20769-85-1) |
| EPA chemical information | Propanoyl bromide, 2-bromo-2-methyl- (20769-85-1) |
Last Update：2024-04-10 22:29:15
2-溴-2-甲基丙酰溴(2-溴异丁酰溴) - Production method
Add bromine dropwise to the mixture of isobutyric acid and red phosphorus, react at 100°C for 6h, and evaporate unreacted bromine and hydrogen bromide under reduced pressure. Cooling and dephosphoric acid to obtain crude 2-bromoisobutyryl bromide. The crude product is fractionated under reduced pressure, and the fraction at 91-98 ℃(13.3kPa) is collected, which is the finished product.
Last Update：2024-04-10 22:29:15
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View History
Raw Materials for 2-溴-2-甲基丙酰溴(2-溴异丁酰溴)
Downstream Products for 2-溴-2-甲基丙酰溴(2-溴异丁酰溴)
2-Bromo-2-methylpropionic acid
Methyl 2-bromo-2-methylpropionate
2-BROMO-2-METHYLPROPIOPHENONE
2-bromo-1-(4-chlorophenyl)-2-methylpropan-1-one
2-BROMO-2-METHYLPROPANAMIDE
Methyl 2-bromo-2-methylpropionate
2-BROMO-2-METHYLPROPIOPHENONE
2-bromo-1-(4-chlorophenyl)-2-methylpropan-1-one
2-BROMO-2-METHYLPROPANAMIDE