Dimethyl carbonate (DMC) has a unique molecular structure (CH3O-CO-OCH3), which contains carbonyl, methyl, methoxy and carbonyl methoxy, so it can be widely used in organic synthesis reactions such as carbonylation, Chemicalbook methylation, methoxy and carbonyl methylation, and has a very wide range of applications. Mainly used as carbonylation and methylation reagents, gasoline additives, synthetic polycarbonate (PC) raw materials.