Acetonitrile

Molecular weight

41.05

Boiling point

81.60°C

Vapor pressure

88.8 Torr at 25°C

Freezing point

-43.8°C

Refractive index

1.3441 at 20°C

Density

0.7822 g/ml (6.527 lb/gal) at 20°C

0.7766 g/ml(6.481 lb/gal) at 25°C

Dielectric constant

37.5 at 20°C

Dipole moment

3.44 D at 20°C

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 15°C

Surface tension

19.10 dyn/cm at 20°C

Solubility in water

Miscible in all proportions