CH3CH2COCH3

CH3CH2COCH3, also known as 2-butanone or methyl ethyl ketone (MEK), is an organic compound with the chemical formula C4H8O. It is a colorless, volatile liquid with a sharp, sweet odor reminiscent of acetone. MEK belongs to the ketone functional group, characterized by a carbonyl group (C=O) bonded to two alkyl groups. In MEK, the carbonyl group is located on the second carbon atom of a four-carbon chain.

MEK is widely used as a solvent in various industrial applications. Its excellent solvency properties make it effective in dissolving resins, lacquers, paints, varnishes, and adhesives. It is a common component in nail polish removers and can be found in some glues and printing inks. Due to its volatility and flammability, MEK requires careful handling and storage.

Industrially, MEK is produced through the dehydrogenation of 2-butanol or the oxidation of n-butane. It is a significant commodity chemical with a substantial global market. While its industrial uses are extensive, prolonged exposure to MEK vapors can cause irritation to the eyes, nose, and throat, and can affect the central nervous system. Appropriate ventilation and personal protective equipment are recommended when working with MEK.