Heptane

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Heptane
Names
IUPAC name
Heptane[2]
Other names
Septane[1]
Identifiers
3D model (JSmol)
Beilstein Reference 1730763
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.005.058
EC Number 205-563-8
Gmelin Reference 49760
MeSH {{{value}}}
PubChem {{{value}}}
RTECS number MI7700000
UNII
UN number 1206
SMILES {{{value}}}
Properties
C7H16
Molar mass 100.21 g·mol−1
Appearance Colourless liquid
Odor Petrolic
Density 0.6795 g cm−3[3]
Melting point −90.549[3] °C (−130.988 °F; 182.601 K)
Boiling point 98.38[3] °C (209.08 °F; 371.53 K)
0.0003% (20 °C)[4]
log P 4.274
Vapor pressure 5.33 kPa (at 20.0 °C)
kH 12 nmol Pa−1 kg−1
-85.24·10−6 cm3/mol
1.3855[3]
Viscosity 0.386 mPa·s
0.0 D
Thermochemistry
Std enthalpy of
formation
ΔfHo298
−225.2–−223.6 kJ mol−1
Std enthalpy of
combustion
ΔcHo298
−4.825–−4.809 MJ mol−1
Standard molar
entropy
So298
328.57 J K−1 mol−1
Specific heat capacity, C 224.64 J K−1 mol−1
Hazards
NFPA 704

NFPA 704.svg

3
1
0
 
Explosive limits 1.05–6.7%
U.S. Permissible
exposure limit (PEL)
TWA 500 ppm (2000 mg/m3)[4]
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

Heptane is an organic compound with the chemical formula C
7
H
16
. It is an alkane with seven carbon atoms. It is used in fuels and is in gasoline.

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. http://rspl.royalsocietypublishing.org/content/15/54. Retrieved 3 April 2018. 
  2. "n-heptane – Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 16 September 2004. Identification and Related Records. Retrieved 2 January 2012.
  3. 3.0 3.1 3.2 3.3 Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 3.290. ISBN 1439855110.
  4. 4.0 4.1 "NIOSH Pocket Guide to Chemical Hazards #0312". National Institute for Occupational Safety and Health (NIOSH).