Sodium fumarate, also called disodium fumarate, is a compound with the molecular formula Na2C4H2O4. It is the sodium salt of fumaric acid, used as an acidity regulator in processed foods. Sodium fumarate and fumaric acid are sometimes used as terminal electron acceptors in the cultivation of certain anaerobic microorganisms. It appears as an odourless, white, crystalline powder and is soluble in water.

CAS：7704-73-6
中文别名：富马酸一钠;
英文别名：Sodium 2-butenedioate,(E);2-Butenedioic acid (E)-,sodium salt;EINECS 231-725-2;Fumaric acid,sodium salt;Sodium maleate;
分子式：C4H3NaO4
分子量：138.054
精确质量：137.993
Psa：77.43
Logp：-1.6229

EINECS号：231-725-2

外观与性状：白色粉末
沸点：355.5ºC at 760 mmHg
熔点：290ºC
闪点：183ºC

RTECS号：LT1830000
安全说明：S26; S36
危险类别码：R36/37/38
WGK Germany：2
危险品标志：Xi

用途
用于酸味剂；缓冲剂；调味剂；抗氧化助剂。用于配制酒、清凉饮料、糖食制晶、粉末果汁、水果罐头、冷饮、果酱、果冻等。亦供配制面包、曲奇饼干等的复配型膨松剂。常与苹果酸、柠檬酸等其他有机酸合用。