Triptane
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Names | |||
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Preferred IUPAC name 2,2,3-Trimethylbutane[1] | |||
Identifiers | |||
CAS Number |
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3D model (JSmol) |
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Beilstein Reference | 1730756 | ||
ChemSpider |
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ECHA InfoCard | 100.006.680 ![]() | ||
EC Number |
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PubChem CID |
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UNII |
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UN number | 1206 | ||
CompTox Dashboard (EPA) |
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InChI
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Properties | |||
Chemical formula | 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 | ||
-88.36·10−6 cm3/mol | |||
Refractive index (nD) | 1.389 | ||
Thermochemistry | |||
Heat capacity (C) | 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: | |||
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Danger | |||
H225, H302, H305, H315, H336, H400 | |||
P210, P261, P273, P301+P310, P331 | |||
NFPA 704 (fire diamond) | ![]() 0 3 0 | ||
Flash point | −7 °C (19 °F; 266 K) | ||
Autoignition temperature | 450 °C (842 °F; 723 K) | ||
Explosive limits | 1–7% | ||
Related compounds | |||
Related alkanes | |||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references |
Chemical compound
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.
See also
References
- ^ "Triptan - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification and Related Records. Retrieved 11 March 2012.
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