Dimethyl Sulfoxide
Solvent Properties

CAS 67-68-5


Physical Properties  
Molecular weight 78.13
Boiling point 189.0°C
Vapor pressure 0.6 Torr at 25°C
Freezing point 18.54°C
Refractive index 1.4793 at 20°C
Density 1.1004 g/mL (9.182 lb/gal) at 20°C
  1.0954 g/mL (9.141 lb/gal) at 25°C
Dielectric constant 46.68 at 20°C
Dipole moment 4.1 D at 25°C
Solvent group 3
Polarity index (P') 7.2
Eluotropic value on alumina 0.62
Viscosity 2.24 cP at 20°C
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 203°F (95)°C by closed cup
Lower explosive limit 2.6%
Upper explosive limit 42%
Time Weighted Avverage Not listed

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