Hexane

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Hexane
Names
IUPAC name
Hexane[2]
Other names
Sextane[1]
Identifiers
3D model (JSmol)
Beilstein Reference 1730733
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.003.435
EC Number 203-777-6
Gmelin Reference 1985
KEGG
MeSH {{{value}}}
PubChem {{{value}}}
RTECS number MN9275000
UNII
UN number 1208
SMILES {{{value}}}
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
1.375
Viscosity 0.3 mPa·s
Thermochemistry
Std enthalpy of
formation
ΔfHo298
−199.4–−198.0 kJ mol−1
Std enthalpy of
combustion
ΔcHo298
−4180–−4140 kJ mol−1
Standard molar
entropy
So298
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

NFPA 704.svg

3
1
0
 
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

Hexane is an organic compound with the chemical formula C
6
H
12
. 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.

There is a lot of hexene in gasoline. Pure hexane has no color and is quite unreactive.

References[change | change source]

  1. 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. Archived from the original on 28 April 2018. https://web.archive.org/web/20180428213625/http://rspl.royalsocietypublishing.org/content/15/54. Retrieved 28 April 2018. 
  2. "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.
  3. 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.
  4. GHS Classification on [PubChem]
  5. "NIOSH Pocket Guide to Chemical Hazards #0322". National Institute for Occupational Safety and Health (NIOSH).