Methyl Ethyl Ketone (MEK)

Methyl Ethyl Ketone (MEK), also known as Butanone or 2-Butanone, is a fast-evaporating industrial solvent widely used for cleaning, degreasing and thinning applications. It is particularly effective at dissolving many oils, resins, coatings, adhesives and similar materials. PubChem

MEK is commonly used within the paint, lacquer, adhesive, printing and metal-finishing industries, where a strong solvent with rapid evaporation is required. Typical applications include cleaning metal components and equipment, removing residues, thinning compatible coatings and lacquers, and preparing surfaces prior to further processing. GOV.UK

Because MEK evaporates quickly, it is useful where a solvent needs to leave the surface rapidly with minimal residue. Compatibility should always be checked before use, particularly on plastics, painted surfaces, rubber and other solvent-sensitive materials.

Typical uses include:

• Industrial solvent and cleaner
• Metal degreasing and surface preparation
• Removal of oils, resins and adhesive residues
• Thinning compatible paints, lacquers and coatings
• Cleaning tools and application equipment
• Adhesive and printing-related applications

Important safety information

MEK is a highly flammable, volatile solvent and should be used only with adequate ventilation and away from heat, sparks, flames and other ignition sources. Vapour can irritate the eyes, nose and throat, and significant exposure can cause effects such as headache or dizziness.

Always consult the Safety Data Sheet before use and wear appropriate personal protective equipment for the intended application.

Chemical name: Butan-2-one / 2-Butanone
Common name: Methyl Ethyl Ketone (MEK)
CAS number: 78-93-3
Formula: C₄H₈O