N-Methylpyrrolidone
Solvent Properties

CAS 872-50-4


Physical Properties  
Molecular weight 99.13
Boiling point 202°C
Vapor pressure 0.33 Torr at 25°C
Freezing point -24.4°C
Refractive index 1.4700 at 20°C
Density 1.0304 g/mL (8.598 lb/gal) at 20°C
  1.0259 g/mL (8.560 lb/gal) at 25°C
Dielectric constant 32.2 at 25°C
Dipole moment 4.09 D at 30°C
Solvent group 3
Polarity index (P') 6.7
Viscosity 1.67 cP at 25°C
Solubility in water Miscible in all proportions
   
Regulatory and Safety Data  
DOT Hazard Class Not Regulated
   
Storage Store in a cool, dry area away from direct sunlight.
   
EPA applicable waste code(s) Not listed. Dispose of material in an environmentally acceptable manner.
Flash point 204°F (96°C) by closed cup
Lower explosive limit Not Listed (NFPA)*
Upper explosive limit Not Listed (NFPA)*
Time Weighted Average Not Listed

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