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| CAS号 : | 814-75-5 |
精确质量 : | 149.96800 |
| 分子式 : | C4H7BrO |
logP : | 1.35880 |
| 分子量 : | 151.00200 |
PSA : | 17.07000 |
3-溴-2-丁酮 | |
3-Bromo-2-butanone | |
814-75-5 | |
C4H7BrO | |
151.00200 | |
17.07000 | |
1.35880 | |
149.96800 |
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1.458-1.46
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透明淡黄色至棕色液体
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库房通风低温干燥,与氧化剂,及食品分开储运
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>100°C
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36 °C (11 mmHg)
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1.438
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EL7005000
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8
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S36/37/39-S26
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III
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1224
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Xn
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R36/37/38
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2933990090
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2933990090. 其他仅含氮杂原子的杂环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0% | |
2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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<p>由丁酮- 溴化而得。将丁酮- 、氯酸钾和水加入反应锅中,加热到36℃,在搅拌下滴加溴,温度升至38℃,约3h加完。再继续保温搅拌1h。静置分层,取下层有机相用氯化镁和水洗涤,干燥,减压分馏,收集81-90℃(20kPa),馏分即得成品。</p> | |
<p>医药中间体</p> |
