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.
| |
| |
| Names | |
|---|---|
| Preferred IUPAC name
Heptadecane[2] | |
| Other names
n-Heptadecane[1]
| |
| Identifiers | |
3D model (JSmol)
|
|
| 3DMet | |
| 1738898 | |
| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.010.100 |
| EC Number |
|
| KEGG | |
| MeSH | heptadecane |
PubChem CID
|
|
| RTECS number |
|
| UNII | |
CompTox Dashboard (EPA)
|
|
| |
| |
| Properties | |
| C17H36 | |
| Molar mass | 240.475 g·mol−1 |
| Appearance | Colorless liquid |
| Odor | Odorless |
| Density | 777 mg mL−1 |
| 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) |
Henry's law
constant (kH) |
180 nmol Pa−1 kg−1 |
Refractive index (nD)
|
1.436 |
| Viscosity | 4.21 mPa·s (20 °C)[3] |
| Thermochemistry | |
Heat capacity (C)
|
2.222 J K−1 g−1 |
Std molar
entropy (S⦵298) |
652.24 J K−1 mol−1 |
Std enthalpy of
formation (ΔfH⦵298) |
−481.9–−477.1 kJ mol−1 |
Std enthalpy of
combustion (ΔcH⦵298) |
−11.3534–−11.3490 MJ mol−1 |
| Hazards | |
| GHS labelling: | |
| |
| Danger | |
| H304 | |
| P301+P310, P331 | |
| 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).
| |
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.[4]
References
edit- ^ Morrison, Robert T.; Boyd, Robert N. (1983). Organic Chemistry (4th ed.). Newton, MA: Allyn and Bacon, Inc. p. 88. ISBN 978-0-205-05838-9.
- ^ "heptadecane - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 16 September 2004. Identification and Related Records. Retrieved 4 March 2012.
- ^ Doolittle, Arthur K. (1951). "Studies in Newtonian Flow. II. The Dependence of the Viscosity of Liquids on Free-Space". Journal of Applied Physics. 22 (12): 1471–1475. doi:10.1063/1.1699894. ISSN 0021-8979.
- ^ 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 (1): 81–87. CiteSeerX 10.1.1.94.8695. doi:10.1021/ci0497657. PMID 15667132.
External links
edit- List of plant species containing heptadecane, Dr. Duke's Phytochemical and Ethnobotanical Databases
- The smallest alkanes which cannot be made, the goodman group, university of cambridge