Acetonitrile
Solvent Properties

CAS 75-05-8


Physical Properties  
Molecular weight 41.05
Boiling point 81.60C
Vapor pressure 88.8 Torr at 25C
Freezing point -43.8C
Refractive index 1.3441 at 20C
Density 0.7822 g/mL (6.527 lb/gal) at 20C
  0.7766 g/mL (6.481 lb/gal) at 25C
Dielectric constant 37.5 at 20C
Dipole moment 3.44 D at 20C
Solvent group 6
Polarity index (P') 5.8
Eluotropic value on alumina 0.65
Eluotropic value on octadecylsilane 3.1
Eluotropic value on silica 0.52
Viscosity 0.38 cP at 15C
Surface tension 19.10 dyn/cm at 20C
Solubility in water Miscible in all proportions
   
Regulatory and Safety Data  
DOT Hazard Class 3, Flammable Liquid
Packing Group II
UN Identification Number UN1648
   
Storage Store in an area designed for flammable storage, or an approved metal cabinet, away from direct sunlight and sources of heat and ignition.
   
EPA applicable waste code(s) D001, U003
Flash Point 42F (6C) by closed cup
Lower explosive limit 3.0%
Upper explosive limit 16.0%
Time Weighted Average 40ppm ACGIH