Methyl Ethyl Ketone
Solvent Properties

CAS 78-93-3

Physical Properties  
Molecular weight 72.11
Boiling point 79.64C
Vapor pressure 74 Torr at 20C
Freezing point -86.69C
Refractive index 1.3788 at 20C
Density 0.8049 g/mL (6.717 lb/gal) at 20C
  0.7997 g/mL (6.673 lb/gal) at 25C
Dielectric constant 18.51 at 20C
Dipole moment 2.76 D at 25C
Solvent group 6
Polarity index (P') 4.7
Eluotropic value on alumina 0.51
Viscosity 0.43 cP at 20C
Surface tension 24.0 dyn/cm at 25C
Solubility in water 24.0% at 20C
Solubility of water in methyl ethyl ketone 10.0% at 20C
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 16F (-9C) by closed cup
Lower explosive limit 1.4%
Upper explosive limit 11.4%
Time Weighted Average 200 ppm ACGIH

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