Colorless transparent liquid, molecular weight: 118.13, density: 0.97 g/cm3, boiling point 126.8℃, melting point-43℃, is a excellent solvent and textile additives, widely used in organic synthesis of ethylator, agent, agent, used as nitrocellulose, cellulose ether, synthetic resin and natural resin solvent. In textile printing and dyeing, diethyl carbonate can make the dyeing distribution even and improve the fading performance: the solvent is polyamide, polymer, in synthetic fiber industry can improve the fabric feel, wrinkle resistance; in paint industry as peeling solvent; in plastic processing as plasticizer or directly as plasticizer; in capacitive battery, lithium battery industry as preparation electrolyte; in medicine as the basic component of pine paste, synthetic intermediates phenobarbital, etc., has a wide market development prospect.