Hexane
Hexane is an organic compound with the chemical formula C6H14. 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 | |
|---|---|
| IUPAC name
Hexane[2]
| |
| Other names
Sextane[1]
| |
| Identifiers | |
| CAS number | |
| PubChem | |
| EC number | 203-777-6 |
| DrugBank | DB02764 |
| KEGG | C11271 |
| MeSH | |
| ChEBI | CHEBI:29021 |
| RTECS number | MN9275000 |
| SMILES | CCCCCC |
| Beilstein Reference | 1730733 |
| Gmelin Reference | 1985 |
| Properties | |
| Molecular formula | C6H14 |
| Molar mass | 86.18 g mol-1 |
| Appearance | Colorless liquid |
| Odor | Petrolic |
| Density | 0.6606 g mL−1[3] |
| Melting point |
Expression error: Unrecognized word "to". °C, 177 to 179 K, Expression error: Unrecognized word "to". °F |
| Boiling point | |
| Solubility in water | 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) | 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 |
3
1
0
|
| Explosive limits | 1.2–7.7% |
| U.S. Permissible exposure limit (PEL) |
TWA 500 ppm (1800 mg/m3)[5] |
Hexane is often part of modern gasoline. Pure hexane has no color and is quite unreactive.
Hexane Media
hexane isomer
hexane isomer
hexane isomer
hexane isomer
References
- ↑ Hofmann, August Wilhelm Von. I. On the action of trichloride of phosphorus on the salts of the aromatic monamines. Proceedings of the Royal Society of London 15 (1 January 1867). p. 54–62. doi:10.1098/rspl.1866.0018. Retrieved 28 April 2018.
- ↑ n-hexane – Compound Summary. PubChem Compound (16 September 2004). USA: National Center for Biotechnology Information. Retrieved 31 December 2011.
- ↑ William M. Haynes. CRC Handbook of Chemistry and Physics (2016). Boca Raton: CRC Press. p. 3–298. ISBN 978-1-4987-5429-3.
- ↑ GHS Classification on [PubChem]
- ↑ NIOSH Pocket Guide to Chemical Hazards. #0322National Institute for Occupational Safety and Health (NIOSH).