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| CAS号 : | 15206-55-0 |
精确质量 : | 164.04700 |
| 分子式 : | C9H8O3 |
logP : | 1.04230 |
| 分子量 : | 164.15800 |
PSA : | 43.37000 |
苯甲酰甲酸甲酯 | |
methyl phenylglyoxalate | |
15206-55-0 | |
C9H8O3 | |
164.15800 | |
43.37000 | |
1.04230 | |
164.04700 |
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n20/D 1.528
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淡黄色液体
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>230 °F
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84 °C0.1 mm Hg(lit.)
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16°C
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1.163 g/mL at 20 °C(lit.)
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0.0263mmHg at 25°C
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Stable under normal temperatures and pressures.
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Store in a cool, dry place. Keep container closed when not in use.
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1
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S24/25
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2918990090
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HS: 2918990090 Other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives |
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品名, 成分含量, 用途 |
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2918990090. 其他含其他附加含氧基羧酸（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:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:30.0% |
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2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
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由苯甲酰酸与甲醇经酯化反应则制得。将环甲醇和苯甲酰甲酸加入反应锅内，搅拌下缓缓加入硫酸。加热回流12h后，回收过量甲醇。酯化物用稀碳酸钠溶液中和，分取油层，水层用苯提取。提取液与油层合并，经无水硫酸钠干燥后，进行蒸馏，先回收溶剂苯，再减压蒸出低沸物，然后收集137-146℃（2.4kPa）馏分，取为苯甲酰甲酸甲酯。所用原料苯甲酰甲酸是由苯乙烯氧化得到的（见04960），苯甲酰甲酸计，酯化收率为50%以上。 | |
农药和医药中间体。 |
