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| CAS号 : | 609-08-5 |
精确质量 : | 174.08900 |
| 分子式 : | C8H14O4 |
logP : | 0.74870 |
| 分子量 : | 174.19400 |
PSA : | 52.60000 |
甲基丙二酸二乙酯 | |
Diethyl Methylmalonate | |
609-08-5 | |
C8H14O4 | |
174.19400 | |
52.60000 | |
0.74870 | |
174.08900 |
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n20/D 1.413(lit.)
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透明液体
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170 °F
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198-199 °C(lit.)
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1.022 g/mL at 20 °C(lit.)
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immiscible
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Stable under normal temperatures and pressures.
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Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. 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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S23-S24/25
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2917190090
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品名, 成分含量, 用途, 对苯二甲酸请注明4-CBA值, 对苯二甲酸请注明P-TL酸值, 对苯二甲酸请注明色度, 对苯二甲酸请注明水分 |
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2917190090 其他无环多元羧酸. 增值税率:17.0% 退税率:9.0% 监管条件:无 最惠国关税:6.5% 普通关税:30.0% |
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2917190090 acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
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生产方法:将草酰丙酸二乙酯加热至激烈逸出一氧化碳,温度130-150℃。放出的气体减少后,逐步上升高温度,使液体回流直至气体逸尽。蒸馏得甲基丙二酸二乙酯,收率97%。 | |
有机合成中间体。 |
