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Butane
chemical compound / From Wikipedia, the free encyclopedia
Butane is an organic compound with the chemical formula C
4H
10. It is an alkane with four carbon atoms. It is used as a fuel (sometimes with propane) and in aerosol cans.
Quick Facts Names, Identifiers ...
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Names | |||
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Preferred IUPAC name
Butane[1] | |||
Systematic IUPAC name
Tetracarbane (never recommended[1]) | |||
Other names | |||
Identifiers | |||
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3D model (JSmol) |
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Beilstein Reference | 969129 | ||
ChEBI | |||
ChEMBL | |||
ChemSpider |
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ECHA InfoCard | 100.003.136 | ||
EC Number |
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E number | E943a (glazing agents, ...) | ||
Gmelin Reference | 1148 | ||
KEGG |
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MeSH | butane | ||
PubChem CID |
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RTECS number |
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UNII | |||
UN number | 1011 | ||
CompTox Dashboard (EPA) |
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SMILES
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Properties | |||
C4H10 | |||
Molar mass | 58.12 g·mol−1 | ||
Appearance | Colorless gas | ||
Odor | Gasoline-like or natural gas-like[2] | ||
Density | 2.48 kg/m3 (at 15 °C (59 °F)) | ||
Melting point | −140 to −134 °C; −220 to −209 °F; 133 to 139 K | ||
Boiling point | −1 to 1 °C; 30 to 34 °F; 272 to 274 K | ||
61 mg L−1 (at 20 °C (68 °F)) | |||
log P | 2.745 | ||
Vapor pressure | ~170 kPa at 283 K [4] | ||
kH | 11 nmol Pa−1 kg−1 | ||
Conjugate acid | Butanium | ||
-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 |
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Explosive limits | 1.8–8.4% | ||
U.S. Permissible exposure limit (PEL) |
none[2] | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |||
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Infobox references | |||
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