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| CAS号 : | 383-63-1 |
精确质量 : | 142.02400 |
| 分子式 : | C4H5F3O2 |
logP : | 1.11180 |
| 分子量 : | 142.07700 |
PSA : | 26.30000 |
三氟乙酸乙酯 | |
Ethyl trifluoroacetate | |
383-63-1 | |
C4H5F3O2 | |
142.07700 | |
26.30000 | |
1.11180 | |
142.02400 |
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n20/D 1.307(lit.)
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透明无色液体
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30 °F
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60-62 °C(lit.)
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-78 °C
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1.194 g/mL at 25 °C(lit.)
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HYDROLYSIS
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Stable under normal temperatures and pressures.
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2-8ºC
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1
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3
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S9-S16-S26-S36/39-S45-S36/37/39
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II
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UN 1993 3/PG 2
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2915900090
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F
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R11; R34
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品名, 成分含量, 用途 |
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A.入境货物通关单 B.出境货物通关单 |
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R.进口食品卫生监督检验 S.出口食品卫生监督检验 M.进口商品检验 N.出口商品检验 |
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2915900090. 其他饱和无环一元羧酸及其酸酐（酰卤、过氧）化物、过氧酸及其卤化、硝化、磺化、亚硝化衍生物. 增值税率:17.0%. 退税率:9.0%. 监管条件:AB(入境货物通关单,出境货物通关单). 最惠国关税:5.5%. 普通关税:30.0% |
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2915900090 other saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:5.5% General tariff:30.0% |
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由三氟乙酸与乙醇酯化而得。将三氟乙酸冷却后,在搅拌下加入无水乙醇,反应放热,待停止放热后,慢慢加入浓硫酸。加热回流半小时后进行分馏,收集62-64℃馏分,即得三氟乙酸乙酯。收率94%。 | |
农药、医药等中间体。 |
