Science / Chemistry / Octane: 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 and as a raw material for building more complex organic molecules. It is the eighth member of the alkane series.

Octane Rating

Technology / Aviation / Octane Rating: The rating system of aviation gasoline with regard to its antidetonating qualities. Fuel with an octane rating of 87 is made up of a mixture of 87% isooctane and 13% heptane. MORE

Rhenium (Re)

Science / Periodic Table of Elements / Rhenium (Re): Atomic number: 75, Atomic mass: 186.23 g.mol -1, Electronegativity: 1.9, Density: 20.5 g.cm-3 at 20°C, Melting point: 3170 °C, Boiling point: 5627 °C, Vanderwaals radius: 0.138 nm, Ionic radius: un MORE


Science / Chemistry / Alkane: A series of organic compounds with general formula CnH2n+2. Alkane names end with -ane. Examples are propane (with n=3) and octane (with n=8). MORE