(M.E.K.O. / Methyl Ethyl Ketoxime)


  • Methyl Ethyl Ketoxime (MEKO)
  • is colorless liquid, which is used in a variety of application. It is used for its properties as an oxidant, metal complexing agent, and versatile blocking group and it prevents skinning in alkyd based systems.
Molecular weight 87 CH3CNOHC2H5 Assay 99.0% Min.
Chemical Name 2-Butanone Oxime Methyl Ethyl Ketone 0.50% Max
Specific Gravity 0.92 g/mi Sec-Butyl Alcohol 0.50% Max
Boiling Point 152oC Water 0.25% Max
Melting Point 29.5oC Color, APHA 8 Max
pH 7.0-8.5 Appearance Clear liquid
Solubility in water Moderate (10%)    
Vapor Pressure About 2mm Hg @ 20oC

Chemicals Properties

Thermal Decomposition Do not expose to high temperatures. Thermal decomposition produces Methyl ethyl ketones, substituted amides and possibly other material. Combustion is expected to produce at least carbon monoxide, carbon dioxide, and oxides of nitrogen. Not compatible with strong acid, oxidant and alkalies.

Product Safety Information

All personnel handling and/or using MEKO must be familiar with appropriate safety and handling precaution. Before handling always read and follow the safety precaution in Material Safety Data Sheet (MSDS).

MEKO is harmful if swallowed or absorbed through the skin. Avoid contact with skin, eyes and clothing. Do not breath vapors. Exposure to liquid and vapors can be irritating to the skin and respiratory track. Eye irritation can be severe and can result it burns. In case of contact, immediately flush the affected area with large quantities of water for at least 15 minutes. Removed contaminated clothing and launder thoroughly before use. Get medical attention for irritation and other symptoms. MEKO is flammable liquid. When handling MEKO keep away from heat and open flame. Do not expose to acid and oxidizers. Wear recommended personal protective equipment including impervious clothing and gloves constructed of butyl rubber, neoprene or nitrile when handling liquids.


MEKO store in cool, dry well ventilated area suitable for flammable liquid. Keep away from strong acid and oxidizers. Protect containers from physical damage. Keep upright and tightly closed. Do not reuse drums.

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