Methyl Ethyl Ketone
Solvent Properties

CAS 78-93-3


Physical Properties  
Molecular weight 72.11
Boiling point 79.64°C
Vapor pressure 74 Torr at 20°C
Freezing point -86.69°C
Refractive index 1.3788 at 20°C
Density 0.8049 g/mL (6.717 lb/gal) at 20°C
  0.7997 g/mL (6.673 lb/gal) at 25°C
Dielectric constant 18.51 at 20°C
Dipole moment 2.76 D at 25°C
Solvent group 6
Polarity index (P') 4.7
Eluotropic value on alumina 0.51
Viscosity 0.43 cP at 20°C
Surface tension 24.0 dyn/cm at 25°C
Solubility in water 24.0% at 20°C
Solubility of water in methyl ethyl ketone 10.0% at 20°C
   
Regulatory and Safety Data  
DOT Hazard Class 3, Flammable Liquid
Packing Group II
UN Identification Number UN1193
   
Storage Store in an area designed for flammable storage, or in an approved metal cabinet, away from direct sunlight, heat and sources of ignition.
   
EPA applicable waste code(s) U159, F005, D035
Flash point 16°F (-9°C) by closed cup
Lower explosive limit 1.4%
Upper explosive limit 11.4%
Time Weighted Average 200 ppm ACGIH

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