Dimethyl Sulfoxide
Solvent Properties

CAS 67-68-5

Physical Properties  
Molecular weight 78.13
Boiling point 189.0C
Vapor pressure 0.6 Torr at 25C
Freezing point 18.54C
Refractive index 1.4793 at 20C
Density 1.1004 g/mL (9.182 lb/gal) at 20C
  1.0954 g/mL (9.141 lb/gal) at 25C
Dielectric constant 46.68 at 20C
Dipole moment 4.1 D at 25C
Solvent group 3
Polarity index (P') 7.2
Eluotropic value on alumina 0.62
Viscosity 2.24 cP at 20C
Solubility in water Miscible in all proportions
Regulatory and Safety Data  
DOT Hazard Class Not Regulated
Storage Store in a cool dry place away from strong oxidizers and strong acids.
EPA applicable waste code(s) Not listed. Dispose of material in an environmentally acceptable manner.
Flash point 203F (95)C by closed cup
Lower explosive limit 2.6%
Upper explosive limit 42%
Time Weighted Avverage Not listed

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