Methyl carbonate, abbreviated as EMC or ethyl carbonate, is a colorless and transparent liquid with strong moisture absorption and flammability. Methyl ethyl carbonate is an asymmetric carbonate that is insoluble in water and soluble in some organic solvents such as alcohols and ethers. Methyl ethyl carbonate is a high-tech and high value-added chemical product that has emerged in recent years. It is an excellent electrolyte solvent for lithium-ion batteries and is the latest product that has been extended with the increase in production of dimethyl carbonate and lithium-ion batteries. Due to its combination of methyl and ethyl, as well as the characteristics of dimethyl carbonate and diethyl carbonate, it is also a solvent for special spices and intermediates, At present, the application field is mainly concentrated in the lithium battery electrolyte industry.