Methyl Isobutyl Ketone
Solvent Properties

CAS 108-10-1

Physical Properties  
Molecular weight 100.16
Boiling point 117.4C
Vapor pressure 16 Torr at 20C
Freezing point -84C
Refractive index 1.3957 at 20C
Density 0.8008 g/mL (6.683 lb/gal) at 20C
  0.7961 g/mL (6.643 lb/gal) at 25C
Dielectric constant 13.11 at 25C
Solvent group 6
Polarity index (P') 4.2
Eluotropic value on alumina 0.43
Viscosity 0.58 cP at 20C
Surface tension 23.64 dyn/cm at 20C
Solubility in water 1.7% at 20C
Solubility of water in methyl isobutyl ketone 1.9% at 25C
Regulatory and Safety Data  
DOT Hazard Class 3, Flammable Liquid
Packing Group II
UN Identification Number UN1245
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) U161, D001
Flash point 64F (18C) by closed cup
Lower explosive limit 1.2%
Upper explosive limit 8.0%
Time Weighted Average 50 ppm ACGIH

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