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Sanhe Biochemical
2-Bromobutane
Product name | 2-Bromobutane |
English alias | butane,2-bromo;1-methylpropyl bromide; |
Structural formula | |
Molecular formula | C4H9Br |
Molecular weight | 137.01800 |
Appearance | Colorless liquid has a pleasant odor. |
Melting point | -112 ℃ |
Relative density | 1.255 g/mL at 25 ℃(lit.) |
Boiling point | 91 ℃(lit.) |
Water solubility | Immiscible |
Refractivity | n20/D 1.4369(lit.) |
Content | ≥99.0% |
Moisture | ≤0.05% |
Stability | Stable. Flammable. Incompatible with strong oxidizing agents. |
Flash point | 70 °F |
Vapor pressure | |
Storage | Ventilation, low-temperature drying, and separate storage from oxidants in the warehouse |
Use | Used as a solvent and also in organic synthesis. |
Production method | It is obtained by reacting sec-butanol with bromic acid in the presence of sulfuric acid. Slowly add concentrated sulfur to hydrobromic acid and mix, then add secondary butanol, reflux reaction for 2-3 hours, distill bromide, layer the distillate, wash the organic phase sequentially with water, concentrated hydrochloric acid, water, sodium carbonate dilute solution, and water, and dry with anhydrous calcium chloride. Finally, distill and collect the 90.5-92.5 ℃ fraction to obtain the finished product. |
UN No. | UN 2339 3/PG 2 |
Hazard class | 3 |
Packing group | II |
HS code | 2903399090 |
Packing | 250KGS/steel drum |
CAS # | 78-76-2 |
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