Octane
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2008-07-06T02:54:17Z
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{{two other uses||the gasoline rating system|Octane rating}}
{{Chembox new
| Name = Octane
| ImageFile = Octane-2D-Skeletal.svg
| ImageFile1 = Octane-3D-balls.png
| Section1 = {{Chembox Identifiers
| SMILES = CCCCCCCC
| CASNo = 111-65-9
| RTECS = RG8400000
}}
| Section2 = {{Chembox Properties
| Formula = C<sub>8</sub>H<sub>18</sub>
| MolarMass = 114.2285 g/mol
| Appearance = colorless liquid
| Density = 0.703 g/ml, liquid
| Solubility = Immiscible
| MeltingPt = −57 °C (216 K)
| BoilingPt = 125.52 °C (398.7 K)
| Viscosity = 0.542 [[Poise|cP]] at 20 °C
}}
| Section4 = {{Chembox Thermochemistry
| DeltaHf = −250 kJ/mol
| DeltaHc = −5430 kJ/mol
}}
| Section7 = {{Chembox Hazards
| EUClass = Flammable ('''F''')<br />Harmful ('''Xn''')<br />Dangerous for<br />the environment ('''N''')
| RPhrases = {{R11}}, {{R38}}, {{R50/53}},<br />{{R65}}, {{R67}}
| SPhrases = {{S2}}, {{S9}}, {{S16}}, {{S29}}, {{S33}},<br />{{S60}}, {{S61}}, {{S62}}
| FlashPt = 13 °C
| Autoignition = 220 °C
}}
| Section8 = {{Chembox Related
| Function = [[alkane]]s
| OtherFunctn = [[Heptane]]<br />[[2,2,4-Trimethylpentane]]}}
}}
'''Octane''' is a straight-chain [[alkane]] with the [[chemical formula]] CH<sub>3</sub>(CH<sub>2</sub>)<sub>6</sub>CH<sub>3</sub>.
Octane has 18 structural [[isomer]]s:
* Octane (''n''-octane)
* [[2-Methylheptane]]
* [[3-Methylheptane]] ([[chirality (chemistry)|chiral]])
* [[4-Methylheptane]]
* [[3-Ethylhexane]]
* [[2,2-Dimethylhexane]]
* [[2,3-Dimethylhexane]] (chiral)
* [[2,4-Dimethylhexane]] (chiral)
* [[2,5-Dimethylhexane]]
* [[3,3-Dimethylhexane]]
* [[3,4-Dimethylhexane]] (chiral, or [[meso compound]])
* [[2-Methyl-3-ethylpentane]]
* [[3-Methyl-3-ethylpentane]]
* [[2,2,3-Trimethylpentane]] (chiral)
* [[2,2,4-Trimethylpentane|2,2,4-Trimethylpentane (isooctane)]]
* [[2,3,3-Trimethylpentane]]
* [[2,3,4-Trimethylpentane]]
* [[2,2,3,3-Tetramethylbutane]]
==References==
{{unreferenced|date=October 2007}}
==External links==
* {{ICSC|0933|09}} (''n''-octane)
* {{PGCH|0470}}
* [http://physchem.ox.ac.uk/MSDS/OC/octane.html Material Safety Data Sheet for Octane]
* [http://ars-grin.gov/cgi-bin/duke/chemical.pl?OCTANE Phytochemical database entry]
* [http://cheric.org/kdb/kdb/hcprop/showprop.php?cmpid=8 Chemical and physical properties table]
{{alkanes}}
[[Category:Alkanes]]
[[ar:أوكتان]]
[[bs:Oktan]]
[[ca:Octà]]
[[da:Octan]]
[[de:Octan]]
[[es:Octano]]
[[eo:Oktano]]
[[fr:Octane]]
[[ko:옥테인]]
[[ku:Oktan]]
[[lv:Oktāns]]
[[hu:Oktán]]
[[nl:Octaan]]
[[ja:オクタン]]
[[no:Oktan]]
[[pl:Oktan]]
[[pms:Otan]]
[[pt:Octano]]
[[ru:Октан]]
[[sr:Октан]]
[[fi:Oktaani (kemia)]]
[[sv:Oktan]]
[[vi:Octan]]
[[tl:Octane]]
[[tr:Oktan]]
[[zh:辛烷]]