Triptane
Appearance
Names | |
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IUPAC name
2,2,3-Trimethylbutane[1]
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Identifiers | |
3D model (JSmol)
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1730756 | |
ChemSpider | |
ECHA InfoCard | 100.006.680 |
EC Number |
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PubChem CID
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UN number | 1206 |
CompTox Dashboard (EPA)
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Properties | |
C7H16 | |
Molar mass | 100.205 g·mol−1 |
Appearance | Colorless liquid |
Odor | Odorless |
Density | 0.693 g mL−1 |
Melting point | −26 to −24 °C; −15 to −11 °F; 247 to 249 K |
Boiling point | 80.8 to 81.2 °C; 177.3 to 178.1 °F; 353.9 to 354.3 K |
Vapor pressure | 23.2286 kPa (at 37.7 °C) |
Henry's law
constant (kH) |
4.1 nmol Pa−1 kg−1 |
Refractive index (nD)
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1.389 |
Thermochemistry | |
Heat capacity (C)
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213.51 J K−1 mol−1 |
Std molar
entropy (S⦵298) |
292.25 J K−1 mol−1 |
Std enthalpy of
formation (ΔfH⦵298) |
−238.0 – −235.8 kJ mol−1 |
Std enthalpy of
combustion (ΔcH⦵298) |
−4.80449 – −4.80349 MJ mol−1 |
Hazards | |
GHS labelling: | |
Danger | |
H225, H304, H315, H336, H400 | |
P210, P261, P273, P301+P310, P331 | |
NFPA 704 (fire diamond) | |
Flash point | −7 °C (19 °F; 266 K) |
450 °C (842 °F; 723 K) | |
Explosive limits | 1–7% |
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).
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Triptane, or 2,2,3-trimethylbutane, is an organic chemical compound with the molecular formula C7H16 or (H3C-)3C-C(-CH3)2H. It is therefore an alkane, specifically the most compact and heavily branched of the heptane isomers, the only one with a butane (C4) backbone.
Triptane is commonly used as an anti-knock additive in aviation fuels.
References
- ^ "Triptan - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification and Related Records. Retrieved 11 March 2012.