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Sanhe Biochemical
1-Bromopropane
| Product name | 1-Bromopropane |
| English alias | n-Propyl bromide; NPB; |
| Structural formula | .png) |
| Molecular formula | C3H7Br |
| Molecular weight | 122.9917 |
| Appearance | Colorless Transparent Liquid |
| Melting point | -110℃ |
| Relative density | 1.354 g/mL at 25 ℃(lit.) |
| Boiling point | 71℃ |
| Water solubility | 2.5 g/L (20 ºC) |
| Refractivity | n20/D 1.434(lit.) |
| Content | ≥99.5% |
| Moisture | ≤0.05% |
| Stability | Stability Flammable - note low flash point. Incompatible with strong oxidizing agents, strong bases. |
| Flash point | 72 °F |
| Vapor pressure | 133mmHg at 25℃ |
| Storage | The warehouse is ventilated and dried at low temperature, and stored separately from oxidants and food additives. |
| Use | Organic extractants and cleaning agents are also used in the synthesis of pharmaceuticals, pesticides, dyes, spices, etc. |
| Production method | Add hydrobromic acid to concentrated sulfuric acid, then add n-propanol, heat and reflux for 0.5 hours. Steam out all the generated bromopropane at 70-75 ℃, wash with concentrated hydrochloric acid, and then neutralize with sodium carbonate to a pH of 7. Dry with anhydrous sodium sulfate, filter, distill the filtrate, collect the 69-74 ℃ fraction to obtain bromopropane. It is obtained by reacting n-propanol with sodium bromide. Heat n-propanol, water, and sodium bromide together until refluxed, maintain 69-72 ℃, add sulfuric acid dropwise, add it, and continue refluxing for 2 hours. Distillation, collect the distillate at 68-100 ℃, wash with sodium carbonate solution to neutral, and then distill to collect the distillate at 68-76 ℃, namely bromopropane. In addition, in the presence of red phosphorus, n-propanol can also react with bromine to prepare bromopropane. |
| UN No. | UN 2344 3/PG 2 |
| Hazard class | 3 |
| Packing group | II |
| HS code | 2903399090 |
| Packing | 250KGS/Closed steel drum |
| CAS # | 106-94-5 |
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