Molecular weight: 104.1, density of 1.00 g/cm3, colorless transparent liquid, boiling point 109℃, melting point-55℃, is the rise of high-tech, high value-added chemical products, a kind of excellent lithium ion battery electrolyte solvent, is with dimethyl carbonate and lithium ion battery production increases and extend the latest products, because it has methyl and ethyl, and dimethyl carbonate, diethyl carbonate characteristics, is also special spices and intermediate solvent.