1,4-Dibromobutane
| Product name | 1,4-Dibromobutane |
| English alias | Butane,1,4-dibromo |
| Structural formula | .png) |
| Molecular formula | C4H8Br2 |
| Molecular weight | 215.9143 |
| Appearance | Clear liquid |
| Melting point | -20℃ |
| Relative density | 1.808 |
| Boiling point | 197℃ |
| Water solubility | Immiscible |
| Refractivity | n20/D 1.519(lit.) |
| Content | ≥99.0% |
| Moisture | ≤0.05% |
| Stability | Stable. Flammable. Incompatible with strong bases, strong oxidizing agents. |
| Flash point | >230 °F |
| Vapor pressure | 0.544mmHg at 25℃ |
| Storage | Under storeroom ventilated at low temperature and stored separately with oxidizing agent. |
| Use | Organic synthetic intermediates used in the manufacture of aminophylline, kebiqing, and so on. |
| Production method | Obtained from 1,4-dibutanol bromination. Hydrobromic acid was added into the reaction pot, stirred to 10 ℃, dropped with sulfuric acid. After addition, the temperature was not more than 15 ℃. Stirring for half an hour, holding at 100-110 ℃ for 6 hours, chilling to room temperature, separating the lower layer liquid, washing it to neutral with soda alkali solution. After dehydration of calcium chloride, filtrating to obtain 1m4-dibromobutane. |
| UN No. | UN 2810 6.1/PG 3 |
| Hazard class | 6.1(b) |
| Packing group | III |
| HS code | 2903399090 |
| Packing | 250KGS/steel drum |
| CAS # | 110-52-1 |