Propane is an organic compound with the chemical formula C
3H
8. It is an alkane with three carbon atoms. It is used in fuels.
[1]
Quick facts Names, Identifiers ...
Propane
 Skeletal formula of propane |
 Skeletal formula of propane with all implicit carbons shown, and all explicit hydrogens added |
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 Ball and stick model of propane |
 Spacefill model of propane |
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| Names |
| Preferred IUPAC name
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Systematic IUPAC name
Tricarbane (never recommended [2]) |
| Identifiers |
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|
3D model (JSmol) |
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| Beilstein Reference |
1730718 |
| ChEBI |
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| ChEMBL |
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| ChemSpider |
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| ECHA InfoCard |
100.000.753 |
| EC Number |
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| E number |
E944 (glazing agents, ...) |
| Gmelin Reference |
25044 |
| KEGG |
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| RTECS number |
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| UNII |
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| UN number |
1978 |
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| Properties[3] |
|
C3H8 |
| Molar mass |
44.10 g·mol−1 |
| Appearance |
Colorless gas |
| Odor |
Odorless |
| Density |
2.0098 kg/m3 (at 0 °C, 101.3 kPa) |
| Melting point |
−187.7 °C; −305.8 °F; 85.5 K |
| Boiling point |
−42.25 to −42.04 °C; −44.05 to −43.67 °F; 230.90 to 231.11 K |
|
47 mg⋅L−1 (at 0 °C) |
| log P |
2.236 |
| Vapor pressure |
853.16 kPa (at 21.1 °C (70.0 °F)) |
| kH |
15 nmol⋅Pa−1⋅kg−1 |
| Conjugate acid |
Propanium |
|
−40.5 × 10−6 cm3/mol |
|
0.083 D[4] |
| Thermochemistry |
Std enthalpy of
formation ΔfHo298 |
−105.2–104.2 kJ⋅mol−1 |
Std enthalpy of
combustion ΔcHo298 |
−2.2197–2.2187 MJ⋅mol−1 |
| Specific heat capacity, C |
73.60 J⋅K−1⋅mol−1 |
| Hazards |
| NFPA 704 |
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| Explosive limits |
2.37–9.5% |
U.S. Permissible
exposure limit (PEL) |
TWA 1000 ppm (1800 mg/m3)[5] |
| Related compounds |
| Related {{{label}}} |
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| Related compounds |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
| Y verify (what is YN ?) |
| Infobox references |
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Close
It begins to burn very quickly.
Its melting temperature is −187.7 °C; its boiling temperature is −42 °C; its density is 1.83 g/l.
Propane is extracted from natural gasoline or from petroleum.
