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| CAS号 : | 576-23-8 |
精确质量 : | 183.98900 |
| 分子式 : | C8H9Br |
logP : | 3.06590 |
| 分子量 : | 185.06100 |
PSA : | 0.00000 |
2,3-二甲基溴苯 | |
2,3-Dimethylbromobenzene | |
576-23-8 | |
C8H9Br | |
185.06100 | |
0.00000 | |
3.06590 | |
183.98900 |
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n20/D 1.560(lit.)
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透明无色至淡黄色液体
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177 °F
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214 °C(lit.)
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21ºC
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1.365 g/mL at 25 °C(lit.)
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Stable at room temperature in closed containers under normal storage and handling conditions.
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Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
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3
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6.1
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S26-S36/37/39-S24/25
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I; II; III
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UN 2810 6.1/PG 3
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Xi
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R36/37/38
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2903999090
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品名, 成分含量, 用途 |
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2903999090 其他芳烃卤化衍生物. 增值税率:17.0% 退税率:9.0% 监管条件:无 最惠国关税:5.5% 普通关税:30.0% |
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2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
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2903999090. Halogenated derivatives of aromatic hydrocarbons. General tariff: |
在装有搅拌、回流管、温度计的3L四口瓶中加入邻二甲苯106g(1mol)和107mL(1.97mol)98%的浓硫酸,然后搅拌加热于100℃反应1.5h,冷却至室温。加入1500mL水搅拌溶解后,在搅拌下用473g水合氢氧化钡与750mL水的碱液中和至pH7。趁热过滤,将滤液倒入3L三口瓶中,在搅拌下于50~60℃加入溴素192g(1.2mol)、溴化钡200g,水700mL,并于50~60℃搅拌反应15h。然后冷却,过滤,用水200mL×2洗涤,真空干燥,得3-溴-邻二甲苯磺酸钡盐约231g,收率69%。 | |
用做有机合成中间体。 |
