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| CAS号 : | 3141-24-0 |
精确质量 : | 317.73500 |
| 分子式 : | C4HBr3S |
logP : | 4.03560 |
| 分子量 : | 320.82800 |
PSA : | 28.24000 |
2,3,5-三溴噻吩 | |
2,3,5-Tribromothiophene | |
3141-24-0 | |
C4HBr3S | |
320.82800 | |
28.24000 | |
4.03560 | |
317.73500 |
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无色透明液体
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n20/D 1.664(lit.)
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>230 °F
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Refrigerator
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25-28 °C(lit.)
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2.483 g/mL at 25 °C(lit.)
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120 °C11 mm Hg(lit.)
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2934999090
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UN 2929 6.1/PG 2
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3
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R20/21/22; R36/37/38
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S36/37/39-S26
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Xn
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品名, 成分含量, 用途 |
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2934999090. 其他杂环化合物. 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% |
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2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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2934999090. Other nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds. General tariff: |
反应器中加入80mL氯仿和168.2g噻吩,在30℃及搅拌下慢慢滴加960g液溴,反应立即开始并伴有大量的溴化氢气体逸出,约4h滴加完毕。反应物加热回流2h,冷至室温,分别向反应物中加入50mL2mol/L氢氧化钠及205mL95%的乙醇,搅拌10min。将反应混合物注入400mL水中,分出有机相,用无水硫酸镁干燥,过滤,蒸出滤液中的溶剂。减压蒸馏收集109~110℃(95.2Pa)馏分423.6g,收率66%。 | |
用于有机合成。 |
