acetonitrile; cyanomethane; ethanenitrile; ethyl nitrile; methyl cyanide
Links:🌍 Wikipedia, 📏 NIST, 📖 PubMed,
📖Houben-Weyl, 2. Band (Acetonitril); p. 124, 250, 456,
📖Org. Chem., v. Richter, 1. Vol (Methyl Cyanide); p. 280
CAS RN:[75-05-8]
Formula:C2H3N; 41.05 g/mol
Molecular structure of acetonitrile
Use:denaturant; extracts; organic synthesis; perfumes; solvent
Density:0.782 g/mL
Molar volume:52.5 mL/mol
Refractive index:1.344
Molecular refractive power:11.12 mL/mol
Dielectric constant:38.80
Dipole moment:3.44 D
Melting point:-44 °C
Boiling point:82 °C
Vapour pressure:89 Torr
Antoine equation
P(Torr) vs T(°C)
Vapour pressure vs temperature
Surface tension:19.10 dyn/cm
Viscosity:0.38 cP
Critical temperature:275 °C
Critical pressure:47.7 atm
Critical volume:173.00 ml/mol
Evaporation rate (ether):2.0
Solubility in water:100 % w/w
Solubility of water:100 % w/w
Log10 partition octanol / water:-0.34
Snyder P':5.8
Snyder X:Xe: 0.3    Xd: 0.3    Xn: 0.4
Solvent strength (ε0, silica):0.50
Solvent strength (ε0, alumina):0.65
Dimroth ET:45.6
Hildebrant solubility parameter (δ):11.9
Hansen solubility parameter:δd: 7.5 (cal/mL)½   δp: 8.8 (cal/mL)½   δh: 3.0 (cal/mL)½
100g dissolves:
96.5g 4-nitrobenzyl chloride
Specific heat capacity:22.0 cal/molK


Molecular structure of acetonitrile
Molecular structure of ethenimine
methyl isocyanide
Molecular structure of methyl isocyanide