Structural formula of heptadecane
Ball and stick model of the heptadecane molecule
IUPAC name
Other names
629-78-7 YesY
3D model (Jmol) Interactive image
3DMet B00353
ChEBI CHEBI:16148 YesY
ChemSpider 11892 YesY
ECHA InfoCard 100.010.100
EC Number 211-108-4
KEGG C01816 YesY
MeSH heptadecane
PubChem 12398
RTECS number MI3550000
Molar mass 240.48 g·mol−1
Appearance Colorless liquid
Odor Odorless
Density 777 mg mL−3
Melting point 21.1 to 22.9 °C; 69.9 to 73.1 °F; 294.2 to 296.0 K
Boiling point 301.9 °C; 575.3 °F; 575.0 K
Vapor pressure 100 Pa (at 115 °C)
180 nmol Pa−1 kg−1
534.34 J K−1 mol−1
652.24 J K−1 mol−1
−481.9–−477.1 kJ mol−1
−11.3534–−11.3490 MJ mol−1
GHS pictograms
GHS signal word DANGER
P301+310, P331
R-phrases R65
Flash point 149 °C (300 °F; 422 K)
Related compounds
Related alkanes
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

Heptadecane is an organic compound, an alkane hydrocarbon with the chemical formula C17H36. The name may refer to any of 24894 theoretically possible structural isomers, or to a mixture thereof.

The unbranched isomer is normal or n-heptadecane, CH3(CH2)15CH3. In the IUPAC nomenclature, the name of this compound is simply heptadecane, since the other isomers are viewed and named as alkyl-substituted versions of smaller alkanes.

The most compact and branched isomer would be tetra-tert-butylmethane, but its existence is believed to be impossible due to steric hindrance. Indeed, it is believed to be the smallest "impossible" alkane.[3]


  1. "heptadecane - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 16 September 2004. Identification and Related Records. Retrieved 4 March 2012.
  2. Morrison, Robert T.; Boyd, Robert N. (1983). Organic Chemistry (4th ed.). Newton, MA: Allyn and Bacon, Inc. p. 88. ISBN 0-205-05838-8.
  3. K. M. de Silva and J. M. Goodman (2005). "What Is the Smallest Saturated Acyclic Alkane that Cannot Be Made?". J. Chem. Inf. Model. 45: 81–87. doi:10.1021/ci0497657. PMID 15667132.
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