A flammable liquid hydrocarbon found in petroleum. Used as a standard to measure the anti-knock properties of motor fuel.

Flammable liquid compounds found in petroleum and natural gas. There are 18 different octanes- they have different structural formulas but share the molecular formula C8H18. Octane is used as a fuel a [..]

A rating scale used to grade gasoline as to its antiknock properties. Also any of several isometric liquid paraffin hydrocarbons, C8H18. Normal octane is a colorless liquid found in petroleum boiling [..]

hydrocarbon of the methane series, 1872, coined from octo- (see octa-) + -ane; so called because it has eight carbon atoms. A fuel's octane rating, in reference to its anti-knocking quality, is a [..]

A measure of the performance quality of gasoline in terms of antiknock qualities. The higher the octane number, the greater the antiknock qualities.

Family of alkane molecules, formula C8H18. Several different isomers exist with different structures but the same chemical formula. One of the isomers, 2,3,4-trimethylpentane, is the standard for knoc [..]

(n) any isomeric saturated hydrocarbon found in petroleum and used as a fuel and solvent

Rating applied to gasoline.

The hydrocarbon substance in gasoline that reduces engine knock or pinging, which is a noise caused by premature ignition of fuel in the cylinder combustion chamber. The higher the octane number, the [..]

Gas with higher octane levels enables the air/fuel mixture to withstand higher compression levels without resulting in engine knocking noises, or "knock". Higher octane gas is often required [..]

Illustrated Glossary of Organic Chemistry Octane: Any alkane of molecular formula C8H18. When unbranched it is called n-octane. There are 25 octane isomers including six pairs of enantiomers and one m [..]

An octane number or octane rating is a value used to indicate the resistance of a motor fuel to knock (ping). Octane numbers are based on a scale on which isooctane is 100 (minimal knock) and heptane [..]

A flammable liquid hydrocarbon found in petroleum. Used as a standard to measure the anti-knock properties of motor fuel. OEM:

a performance rating of gasoline; the higher the octane number, the greater the anti-knock quality of the gasoline.

the saturated hydrocarbon (alkane) with eight carbon atoms in its molecule (C8H18); the eighth member of the paraffin series - a liquid under normal conditions.

An hydrocarbon of the paraffin series. It is liquid at ordinary atmospheric conditions, although small amounts may be present in the gas associated with petroleum.

Measure of the combustion performance of a fuel in a gasoline engine.

Octane is an alkane hydrocarbon used for measuring engine performance (octane rating), which tells the user the level of fuel that can be compressed by an engine before it spontaneously combusts. The higher the octane number, the more compression the fuel can tolerate.

For a gasoline engine to work efficiently, gasoline must burn smoothly without premature detonation, or knocking. Severe knocking can dissipate power output and even cause damage to the engine. When gasoline engines became more powerful in the 1920s, it was discovered that the most extreme knocking effect was produced by a fuel composed of pure nor [..]

The octane rating of a fuel is indicated on the pump – using numbers such as 87, 90, 91 etc. The higher the number, the greater the octane rating of the gasoline.

(chemistry) Any of the eighteen isomeric aliphatic hydrocarbons (C₈H₁₈) found in petroleum, especially an iso-octane 2,2,4 trimethyl-pentane; they are used as fuels and solvent [..]