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Methyl Ethyl Ketone (MEK)

Other Trading Names:

  • Butanone
  • 2-Butanone
  • Ethyl Methyl Ketone
  • Ethyl Methyl Carbonyl
  • Methyl Acetone
  • MEK
  • Butan-2-one
  • Ethyl Methyl Ketone
  • 2-Butanone
  • Ethyl Methyl Ketone
  • 3-Butanone

CAS Number: 78-93-3

HS Code: 291412

Types of Packaging:

  • 165kg/steel drum (80drums/20ft)
  • 165kg/steel drum (152drums/40ft)
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Methyl Ethyl Ketone (MEK)

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Chemical Name

Methyl Ethyl Ketone (MEK)

Molecular Formula


CAS Number



Colorless Flammable Liquid, Sharp Sweet Odor

Grade Standard

Industrial Grade, Pharmaceutical Grade


24.0% at 20°C

Melting Point


Boiling Point



0.8049 g/mL



Chemical Description: 

  • Methyl Ethyl Ketone, commonly known as MEK, is a volatile organic compound and a member of the ketone family. It is represented by the chemical formula C4H8O and has a molecular weight of approximately 72.11 g/mol.
  • MEK is a clear, colorless liquid with a sweet and acetone-like odor. It is highly volatile, meaning it evaporates quickly at room temperature.
  • It is a four-carbon ketone with a carbonyl group (C=O) between the second and third carbon atoms. The systematic IUPAC name for MEK is 2-Butanone.
  • MEK is widely recognized for its excellent solvent properties. It can dissolve a wide range of organic compounds, including resins, adhesives, and various polymers. This solvency power makes it valuable in numerous industries for processes like paint and coating formulation, adhesive production, and chemical synthesis.
  • MEK is flammable and can form explosive vapor-air mixtures if not handled and stored properly. It has a relatively low flashpoint, making it important to observe safety precautions in its use and storage.
  • MEK has a boiling point of approximately 79.6°C (175.3°F) and a melting point of around -86.3°C (-123.3°F). These physical properties allow for its use in various temperature-dependent applications.
  • MEK is used in various industries, including paints and coatings, adhesives and sealants, pharmaceuticals, chemical manufacturing, polymer and resin production, textile and leather, electronics, automotive, woodworking, environmental testing, and more.
  • Safety considerations are crucial when working with MEK due to its flammable nature. Proper ventilation and the use of protective equipment are recommended to ensure safe handling.
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Methyl Ethyl Ketone (MEK)