1,3-Dibromopropane
| Product name | 1,3-Dibromopropane |
| English alias | 1,3-propanedibromide; |
| Structural formula |  |
| Molecular formula | C3H6Br2 |
| Molecular weight | 201.88800 |
| Appearance | Transparent liquid |
| Melting point | −34 ℃(lit.) |
| Relative density | 1.989 g/mL at 25℃(lit.) |
| Boiling point | 167℃(lit.) |
| Water solubility | 1.7 g/L (30℃) |
| Refractivity | n20/D 1.524(lit.) |
| Content | ≥99.0% |
| Moisture | ≤0.05% |
| Stability | Stable. Incompatible with strong oxidizing agents, strong bases. Flammable. |
| Flash point | 54 ℃ |
| Vapor pressure | 0.55mmHg at 25°C |
| Storage | The storage room is ventilated and dry and stored separately with food, oxidants and acids. |
| Use | Organic synthetic intermediates. |
| Production method | The product was prepared by the reaction of propanediol with bromohydrogen acid. Concentrated sulfuric acid and 1,3-Propanediol were added to the bromohydrogen acid, then slowly dripped into concentrated sulfuric acid, then refluxed in the sand bath for 7 hours, then the coarse product was steamed out and washed with water once. 10% sodium thiosulfate solution was used to wash 10% sodium carbonate twice for 2-3 times, then the water layer was removed and dried with anhydrous calcium chloride. The product was obtained by constant pressure fractionation and collection of 159-168 ℃ fractions. |
| UN No. | UN 1993 3/PG 3 |
| Hazard class | 3 |
| Packing group | III |
| HS code | 2903399090 |
| Packing | 250KGS/steel drum |
| CAS # | 109-64-8 |