富马酸二乙酯

富马酸二乙酯

diethyl fumarate

623-91-6

C8H12O4

172.17800

52.60000

0.66880

172.07400

1.4396-1.4416

无色液体

91ºC

218-219ºC

41641ºC

1.052

Stable. Combustible. Incompatible with strong oxidizing agents, acids, bases, reducing agents.

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

29171990

S23

Xn

R22

2933990090

2933990090. 其他仅含氮杂原子的杂环化合物. 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%

2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

<p>1.由反丁烯二酸与乙醇在硫酸催化下酯化而得。 <br>2.制法: 于装有搅拌器、分水器的反应瓶中,加入富马酸<br>(2)290g(2.5mol)无水乙醇370g(8mol),浓硫酸40g,苯1000mL,共沸脱水。苯层流回反应瓶,水层分出,反应约12h。将反应物倒入大量的水中,分出苯层。有机层水洗,再用饱和碳酸钠溶液洗涤,水洗,无水硫酸钠干燥。蒸出苯后,减压蒸馏,收集96～99℃/1.33kPa的馏分,得富马酸二乙酯<br>(1)300g,收率70%。 </p>

<p>用作有机合成中间体及溶剂。</p>