3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||55.080 g·mol−1|
|Odor||sweetish, pleasant, ethereal|
|Density||772 mg mL−1|
|Melting point||−100 to −86 °C; −148 to −123 °F; 173 to 187 K|
|Boiling point||96 to 98 °C; 205 to 208 °F; 369 to 371 K|
|11.9% (20 °C)|
|Vapor pressure||270 μmol Pa−1 kg−1|
Refractive index (nD)
Heat capacity (C)
|105.3 J K−1 mol−1|
|189.33 J K−1 mol−1|
Std enthalpy of
|15.5 kJ mol−1|
Std enthalpy of
|−1.94884–−1.94776 MJ mol−1|
|GHS signal word||DANGER|
|H225, H300, H310, H319, H332|
|P210, P264, P280, P301+310, P302+350, P305+351+338|
|Flash point||6 °C (43 °F; 279 K)|
|Lethal dose or concentration (LD, LC):|
LD50 (median dose)
|39 mg kg−1 (oral, rat)|
|US health exposure limits (NIOSH):|
|TWA 6 ppm (14 mg/m3)|
IDLH (Immediate danger)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Propionitrile, also known as ethyl cyanide and propanenitrile, is an organic compound with the formula CH3CH2CN. It is a simple aliphatic nitrile. The compound is a colourless, water-soluble liquid. It is used as a solvent and a precursor to other organic compounds.
Propionitrile is a byproduct of the electrodimerisation of acrylonitrile to adiponitrile.
Propionitrile is a solvent similar to acetonitrile but with a slightly higher boiling point. It is a precursor to propylamines by hydrogenation. It is a C-3 building block in the preparation of the drug flopropione by the Houben-Hoesch reaction.
In 1979, the Kalama (Vega) plant in Beaufort, South Carolina experienced an explosion during the production of propanenitrile by nickel-catalyzed reduction of acrylonitrile. This site is now one of the two Superfund cleanup sites in South Carolina.