Hexane
chemical compound
Hexane is an organic compound with the chemical formula C
6H
14. It is an alkane with 6 carbon atoms. "Hexane" can mean any of the 5 structural isomers (meaning compounds with the same chemical formula but a different shape) it has. IUPAC naming says that "hexane" only means the isomer with no branches, with the other 4 having different names.
Names | |
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IUPAC name
Hexane[2]
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Other names
Sextane[1]
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Identifiers | |
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3D model (JSmol)
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Beilstein Reference | 1730733 |
ChEBI | |
ChEMBL | |
ChemSpider | |
DrugBank | |
ECHA InfoCard | 100.003.435 |
EC Number |
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Gmelin Reference | 1985 |
KEGG | |
MeSH | n-hexane |
PubChem CID
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RTECS number |
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UNII | |
UN number | 1208 |
CompTox Dashboard (EPA)
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Properties | |
C6H14 | |
Molar mass | 86.18 g·mol−1 |
Appearance | Colorless liquid |
Odor | Petrolic |
Density | 0.6606 g mL−1[3] |
Melting point | −96 to −94 °C; −141 to −137 °F; 177 to 179 K |
Boiling point | 68.5 to 69.1 °C; 155.2 to 156.3 °F; 341.6 to 342.2 K |
9.5 mg L−1 | |
log P | 3.764 |
Vapor pressure | 17.60 kPa (at 20.0 °C) |
kH | 7.6 nmol Pa−1 kg−1 |
λmax | 200 nm |
−74.6·10−6 cm3/mol | |
Refractive index (nD)
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1.375 |
Viscosity | 0.3 mPa·s |
Thermochemistry | |
Std enthalpy of formation ΔfH |
−199.4–−198.0 kJ mol−1 |
Std enthalpy of combustion ΔcH |
−4180–−4140 kJ mol−1 |
Standard molar entropy S |
296.06 J K−1 mol−1 |
Specific heat capacity, C | 265.2 J K−1 mol−1 |
Hazards | |
Main hazards | Reproductive toxicity – After aspiration, pulmonary oedema, pneumonitis, and death [4] |
NFPA 704 |
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Explosive limits | 1.2–7.7% |
U.S. Permissible exposure limit (PEL) |
TWA 500 ppm (1800 mg/m3)[5] |
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 | |
There is a lot of hexene in gasoline. Pure hexane has no color and is quite unreactive.
ReferencesEdit
- ↑ Hofmann, August Wilhelm Von (1 January 1867). "I. On the action of trichloride of phosphorus on the salts of the aromatic monamines". Proceedings of the Royal Society of London. 15: 54–62. doi:10.1098/rspl.1866.0018. S2CID 98496840. Archived from the original on 28 April 2018. Retrieved 28 April 2018 – via rspl.royalsocietypublishing.org.
- ↑ "n-hexane – Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 16 September 2004. Identification and Related Records. Archived from the original on 8 March 2012. Retrieved 31 December 2011.
- ↑ William M. Haynes (2016). CRC Handbook of Chemistry and Physics (97th ed.). Boca Raton: CRC Press. p. 3–298. ISBN 978-1-4987-5429-3.
- ↑ GHS Classification on [PubChem]
- ↑ NIOSH Pocket Guide to Chemical Hazards. "#0322". National Institute for Occupational Safety and Health (NIOSH).