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| Butane | |
|---|---|
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 |  |
| Other names | Butyl hydride Quartane |
| Identifiers | |
| CAS number | |
| PubChem | |
| EC number | 203-448-7 |
| KEGG | D03186 |
| MeSH | |
| ChEBI | CHEBI:37808 |
| RTECS number | EJ4200000 |
| SMILES | CCCC |
| Beilstein Reference | 969129 |
| Gmelin Reference | 1148 |
| Properties | |
| Molecular formula | C4H10 |
| Molar mass | 58.12 g mol-1 |
| Appearance | Colorless gas |
| Odor | Gasoline-like or natural gas-like |
| Density | 2.48 kg/m3 (at 15 °C (59 °F)) |
| Melting point | Expression error: Unrecognized word "to". °C, 133 to 139 K, Expression error: Unrecognized word "to". °F |
| Boiling point | |
| Solubility in water | 61 mg L−1 (at 20 °C (68 °F)) |
| log P | 2.745 |
| Vapor pressure | ~170 kPa at 283 K |
| kH | 11 nmol Pa−1 kg−1 |
| -57.4·10−6 cm3/mol | |
| Thermochemistry | |
| Std enthalpy of formation ΔfH | −126.3–−124.9 kJ mol−1 |
| Std enthalpy of combustion ΔcH | −2.8781–−2.8769 MJ mol−1 |
| Specific heat capacity, C | 98.49 J K−1 mol−1 |
| Hazards | |
| NFPA 704 |
4 1 0 |
| Explosive limits | 1.8–8.4% |
| U.S. Permissible exposure limit (PEL) | none |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Butane is an organic compound with the chemical formula C4H10. It is an alkane with four carbon atoms. It is used as a fuel (sometimes with propane) and in aerosol cans.
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