CH3CH2O2CEt2

CH3CH2O2CEt2, also known as diethyl carbonate, is an organic compound with the chemical formula C5H10O3. It is a diester of carbonic acid and ethanol. Diethyl carbonate is a colorless, volatile liquid with a mild, pleasant odor. It is soluble in most organic solvents but has limited solubility in water.

Diethyl carbonate is produced industrially through the reaction of phosgene with ethanol or through the oxidative carbonylation of ethanol. It finds various applications in the chemical industry. It is commonly used as a solvent, particularly for resins, cellulose esters, and polymers. Its low toxicity and good solvency properties make it a suitable alternative to some more hazardous organic solvents.

In addition to its role as a solvent, diethyl carbonate is also employed as a reagent in organic synthesis. It can be used for the ethylation of amines and other nucleophiles, and it serves as a precursor in the synthesis of various chemicals, including pharmaceuticals and agrochemicals. Furthermore, diethyl carbonate is an important electrolyte component in lithium-ion batteries, where it helps to dissolve the lithium salt and facilitate ion transport. Its electrochemical stability and relatively low volatility contribute to its utility in this application.