Methyl ethyl ketone (MEK), also systematically known as 2-butanone, is a colorless, highly volatile, and flammable organic liquid solvent with a sharp, sweet odor reminiscent of acetone. It has the molecular formula C4H8O (or CH3COCH2CH3). Industrially, it is produced on a large scale primarily through the dehydrogenation of 2-butanol, though it also occurs naturally in trace amounts within certain fruits and vegetables. [1, 2, 3, 4, 5, 6]
Key Chemical & Physical Properties
Boiling Point: 79.6°C (175.3°F), giving it a fast evaporation rate.
Flash Point: -4°C (24.8°F), making it a significant fire hazard.
Solubility: Highly miscible with alcohol and partially soluble in water.
Vapor Density: 2.5 (heavier than air, meaning vapors can travel along floors)