Ethane is a chemical compound with chemical formula C2H6 and structural formula CH3-CH3.

It is an alkane, that is, an aliphatic hydrocarbon. At ordinary pressure and temperature ethane is a colourless, odourless gas; boiling point is 88.6°; melting point is 183.3°.

It is the simplest hydrocarbon containing more than one carbon atom. Ethane is a prominent compound of industrial importance, by converting it to ethylene or using it as a building block for the petrochemical industry, for the synthesis both of polyethylene plastic and other small compounds.