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| CAS号 : | 609-09-6 |
精确质量 : | 174.05300 |
| 分子式 : | C7H10O5 |
logP : | -0.31830 |
| 分子量 : | 174.15100 |
PSA : | 69.67000 |
酮基丙二酸二乙酯 | |
Diethyl ketomalonate | |
609-09-6 | |
C7H10O5 | |
174.15100 | |
69.67000 | |
-0.31830 | |
174.05300 |
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黄色至黄色-绿色液体
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n20/D 1.415
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>230 °F
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-70°C
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1.142 g/mL at 25 °C(lit.)
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95-98 °C12 mm Hg(lit.)
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2918300090
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3
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S24/25
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Xi
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品名, 成分含量, 用途 |
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2918300090 其他含醛基或酮基不含其他含氧基羧酸(包括酸酐、酰卤化物、过氧化物和过氧酸及该税号的衍生物). 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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2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
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2918300090. Other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives. General tariff: |
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一、生产方法简述:将三氧化二氮气体通入冷却的丙二酸二乙酯中,反应物转为绿色,通气完毕,使反应液渐渐升温,至室温后保持2d以上。减压蒸馏,收集103-108℃(2.0kPa)馏分,得酮基丙二酸二乙酯。收率74%-76%。 | |
用于有机合成。 |