Methyl Ethyl Ketone 

Alternative Names: Butanone, Methyl Ethyl Ketone, 2- butanone ethyl methyl ketone, MEK, Ethyl Methyl Ketone

CAS Number: 78-93-3 EC Number: 201-159-0

Typical Properties:

Formula:  CH3COCH2CH3 
Molecular mass:  72.1 
Boiling point:  80°C 
Melting Point:  -87°C 
Flash Point:  -9°C 


Methyl ethyl ketone (MEK) is a colourless, flammable organic solvent with a strong, sweet odour. MEK is a ketone, meaning it has a carbonyl group (-C=O) attached to two carbon atoms in the molecule. MEK has a low boiling point, it is easy to evaporate and leaves no residue, making it an ideal solvent for applications where a clean surface is required. MEK is also used as a cleaning agent in the electronics industry to remove flux residue after soldering and in the printing industry to clean printing presses and rollers. 

MEK is also used as a solvent for a variety of other substances, paints, adhesives, and resins, as well as for the extraction of oils and fats. MEK is also used as a solvent in the production of plastics, rubber, and pharmaceuticals. 


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