OCOOCH2CH3

OCOOCH2CH3, also known as ethyl carbonate or diethyl carbonate, is an organic compound with the chemical formula (C2H5O)2CO. It is a clear, colorless liquid with a faint, pleasant odor. It belongs to the class of organic carbonates and is structurally related to carbonic acid, where both hydroxyl groups have been replaced by ethoxy groups.

Ethyl carbonate is primarily used as a solvent and as a reagent in organic synthesis. Its properties as a polar aprotic solvent make it suitable for various reactions, including those involving ionic compounds. It finds application in the production of polymers, as an electrolyte component in lithium-ion batteries, and as a precursor for other chemical compounds. In some contexts, it has also been explored as a fuel additive.

The synthesis of ethyl carbonate can be achieved through several methods, including the reaction of ethanol with phosgene or the transesterification of diethyl carbonate with other alcohols. It is generally considered to have low toxicity, although inhalation of vapors and prolonged skin contact should be avoided. Environmental considerations are also important due to its potential for volatility.