Heptadecane
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 | |
| Other names
n-Heptadecane | |
| Identifiers | |
3D model (JSmol) |
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| 3DMet | |
| 1738898 | |
| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.010.100 |
| EC Number |
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| KEGG | |
| MeSH | heptadecane |
PubChem CID |
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| RTECS number |
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| UNII | |
CompTox Dashboard (EPA) |
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SMILES
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| 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) |
| 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 |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
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.
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