Octane
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Octane".

For the gasoline rating system, see Octane rating. For other uses, see Octane (disambiguation).
content
Octane
Identifiers
CAS number 111-65-9
RTECS number RG8400000
SMILES
 
Properties
Molecular formula C8H18
Molar mass 114.2285 g/mol
Appearance colorless liquid
Density 0.703 g/ml, liquid
Melting point

−57 °C (216 K)
Boiling point

125.52 °C (398.7 K)
Solubility in water Immiscible
Viscosity 0.542 cP at 20 °C
Thermochemistry
Std enthalpy of
formation ΔfHo298		 −250 kJ/mol
Std enthalpy of
combustion ΔcHo298		 −5430 kJ/mol
Hazards
EU classification Flammable (F)
Harmful (Xn)
Dangerous for
the environment (N)
R-phrases R11, R38, R50/53,
R65, R67
S-phrases (S2), S9, S16, S29, S33,
S60, S61, S62
Flash point 13 °C
Autoignition
temperature		 220 °C
Related compounds
Related alkanes Heptane
2,2,4-Trimethylpentane
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox references

Octane is a straight-chain alkane with the chemical formula CH3(CH2)6CH3.

Octane has 18 structural isomers:

Metaphorical use

"High octane" is often used to describe a dynamic, intense lifestyle in common speech. Presumably this is by analogy with high performance cars, which tend to require a fuel with a high Octane rating.

References

 This article does not cite any references or sources.
Please help improve this article by adding citations to reliable sources. Unverifiable material may be challenged and removed. (October 2007)

External links

(n-octane)
v • d • e
Alkanes
Methane (CH4) • Ethane (C2H6) • Propane (C3H8) • Butane (C4H10) • Pentane (C5H12) • Hexane (C6H14) • Heptane (C7H16) •Octane (C8H18) • Nonane (C9H20) • Decane (C10H22) • Undecane (C11H24) • Dodecane (C12H26)
List of alkanes
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