Dimethyl dicarbonate (DMDC) is an organic compound which is a colorless liquid with a sharp odor at room temperature. It is primarily used as a beverage preservative, processing aid, or sterilant (INS No. 242), and acts by inhibiting the enzymes acetate kinase and L-glutamic acid decarboxylase. It has also been proposed that DMDC inhibits the enzymes alcohol dehydrogenase and glyceraldehyde 3-phosphate dehydrogenase by causing the methoxycarbonylation of their histidine components.

CAS：4525-33-1
中文别名：二碳酸二甲酯;
英文别名：DMPC Dimethyl pyrocarbonate Pyrocarbonic acid dimethyl ester;methoxycarbonyl methyl carbonate;
分子式：C4H6O5
分子量：134.087
精确质量：134.022
Psa：61.83
Logp：0.5358

UNII：1AY9229ZMG

密度：1.242g/cm3
沸点：171.4ºC at 760mmHg
熔点：15-17ºC
闪点：80ºC
折射率：n20/D 1.392(lit.)
储存条件：库房通风低温干燥,与食品原料分开储运

安全说明：S18; S26; S28; S36/37/39; S38; S45
危险类别码：R21/22
危险品运输编码：UN 2927 6.1/PG 2
海关编码：2920909090
危险类别：6.1(a)
包装等级：II
危险品标志：T
危险标志：GHS05, GHS06
信号词：Danger
危险性描述：H302 + H312; H314; H330
危险性防范说明：P260; P280; P284; P305 + P351 + P338; P310