2-Methylheptane
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Names | |
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Preferred IUPAC name 2-Methylheptane[1] | |
Identifiers | |
CAS Number |
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3D model (JSmol) |
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Beilstein Reference | 1696862 |
ChEBI |
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ChemSpider |
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ECHA InfoCard | 100.008.863 ![]() |
EC Number |
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PubChem CID |
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UNII |
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UN number | 1262 |
CompTox Dashboard (EPA) |
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InChI
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Properties | |
Chemical formula | C8H18 |
Molar mass | 114.232 g·mol−1 |
Appearance | Colourless liquid |
Odor | Odourless |
Density | 698 mg mL−1 |
Melting point | −112 to −108 °C; −170 to −163 °F; 161 to 165 K |
Boiling point | 116.8 to 118.4 °C; 242.2 to 245.0 °F; 389.9 to 391.5 K |
Vapor pressure | 5.3 kPa (at 37.7 °C) |
Henry's law constant (kH) | 2.7 nmol Pa−1 kg−1 |
Refractive index (nD) | 1.395–1.396 |
Thermochemistry | |
Heat capacity (C) | 252.00 J K−1 mol−1 |
Std molar entropy (S⦵298) | 356.39 J K−1 mol−1 |
Std enthalpy of formation (ΔfH⦵298) | −256.5–−253.9 kJ mol−1 |
Std enthalpy of combustion (ΔcH⦵298) | −5466.7–−5464.3 kJ mol−1 |
Hazards | |
GHS labelling: | |
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Danger | |
H225, H304, H315, H336, H410 | |
P210, P261, P273, P301+P310, P331 | |
NFPA 704 (fire diamond) | ![]() 0 3 0 |
Flash point | 4.4 °C (39.9 °F; 277.5 K) |
Explosive limits | 0.98–?% |
Related compounds | |
Related alkanes | |
Related compounds | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ![]() ![]() ![]() Infobox references |
Chemical compound
2-Methylheptane is a branched-chain alkane and an isomer of octane. It is an heptane molecule with a methyl group attached to its second atom. It is a flammable colorless liquid used as fuel.[2]
If the standard definition of the prefix "iso-" is strictly used then 2-methylheptane can be called "Isooctane". However this name is usually used for another much more important isomer of octane 2,2,4-trimethylpentane.[3]
References
- ^ "2-METHYLHEPTANE - Compound Summary". PubChem Compound. National Center for Biotechnology Information. 26 March 2005. Retrieved 6 March 2012.
- ^ PubChem. "2-Methylheptane". pubchem.ncbi.nlm.nih.gov. Retrieved 2024-02-18.
- ^ Clayden, Jonathan (2005). Organic chemistry (Reprinted (with corrections). ed.). Oxford [u.a.]: Oxford Univ. Press. pp. 315. ISBN 978-0-19-850346-0.
External links
- International Chemical Safety Card 0731
- Chemical and physical properties table
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