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Structural formula of butyronitrile
Ball-and-stick model of the butyronitrile molecule
IUPAC name
Other names
  • 1-Cyanopropane[2]
  • Propyl cyanide[2]
  • n-Butyronitrile[2]
  • 109-74-0 ☑Y
3D model (JSmol)
  • Interactive image
  • CHEBI:51937 ☒N
  • 7717 ☒N
ECHA InfoCard 100.003.365
EC Number 203-700-6
MeSH N-butyronitrile
PubChem CID
  • 8008
RTECS number ET8750000
UN number 2411
Molar mass 69.11 g·mol−1
Appearance Colorless
Odor Sharp and suffocating[2]
Density 794 mg mL−1
Melting point −111.90 °C; −169.42 °F; 161.25 K
Boiling point 117.6 °C; 243.6 °F; 390.7 K
0.033 g/100 mL
Solubility soluble in benzene
miscible in alcohol, ether, dimethylformamide
Vapor pressure 3.1 Pa
190 μmol Pa−1 kg−1
-49.4·10−6 cm3/mol
134.2 J K−1 mol−1
−6.8–−4.8 kJ mol−1
−2.579 MJ mol−1
GHS pictograms The flame pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The skull-and-crossbones pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word DANGER
H225, H301, H311, H331
P210, P261, P280, P301+310, P311
NFPA 704
Flammability code 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g., gasoline Health code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gas Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point 18 °C (64 °F; 291 K)
488 °C (910 °F; 761 K)
Explosive limits 1.65%–?[2]
Lethal dose or concentration (LD, LC):
LD50 (median dose)
50 mg kg−1 (oral, rat)
US health exposure limits (NIOSH):
PEL (Permissible)
REL (Recommended)
TWA 8 ppm (22 mg/m3)[2]
IDLH (Immediate danger)
Related compounds
Related alkanenitriles
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is ☑Y☒N ?)
Infobox references

Butyronitrile or butanenitrile or propyl cyanide, is a nitrile with the formula C3H7CN. This colorless liquid is miscible with most polar organic solvents.


Butyronitrile is mainly used as a precursor to the poultry drug amprolium.[4]


Butyronitrile is prepared industrially by the ammoxidation of n-butanol:

C3H7CH2OH + NH3 + O2 → C3H7CN + 3 H2O

Occurrence in space

Butyronitrile has been detected in the Large Molecule Heimat.[5]


  1. ^ Merck Index, 11th Edition, 1597
  2. ^ a b c d e f g h "NIOSH Pocket Guide to Chemical Hazards #0086". National Institute for Occupational Safety and Health (NIOSH).
  3. ^ "N-butyronitrile - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification. Retrieved 12 June 2012.
  4. ^ Peter Pollak, Gérard Romeder, Ferdinand Hagedorn, Heinz-Peter Gelbke "Nitriles" Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. doi:10.1002/14356007.a17_363
  5. ^ "Two highly complex organic molecules detected in space". Royal Astronomical Society. 21 April 2009. Retrieved 29 September 2015.

External links

  • NIST Chemistry WebBook page for C4H7N
  • CDC - NIOSH Pocket Guide to Chemical Hazards
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