Hexane

chemical compound

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

Hexane
Names
IUPAC name
Hexane[2]
Other names
Sextane[1]
Identifiers
  • 110-54-3 checkY
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 n-hexane
RTECS number
  • MN9275000
UNII
UN number 1208
  • CCCCCC
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).
checkY verify (what is checkY☒N ?)
Infobox references

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

ReferencesEdit

  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. S2CID 98496840. Archived from the original on 28 April 2018. Retrieved 28 April 2018 – via rspl.royalsocietypublishing.org.
  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).