What does ethane mean?
Ethane is a colourless, odourless, highly flammable gas and the simplest hydrocarbon after methane, consisting of just two carbon atoms bonded to six hydrogen atoms (C₂H₆). It belongs to the alkane family — compounds whose carbons are linked entirely by single bonds — and occurs as the second most abundant component of natural gas. Although rarely encountered directly in daily life, ethane is industrially important: it is separated from natural gas liquids, transported in refrigerated liquid form, and 'cracked' at high temperatures to produce ethylene, the feedstock from which polyethylene plastic is made. Beyond Earth, ethane has been detected on Titan, where cold conditions allow it to exist as a liquid, contributing to lakes of hydrocarbons on the moon's surface. The name derives from 'ether', reflecting nineteenth-century ideas about the structure of organic compounds.
nounA colourless, odourless flammable gaseous hydrocarbon, the second member of the alkane series, with the chemical formula C₂H₆.
- The saturated hydrocarbon C₂H₆, a colourless flammable gas occurring in natural gas and petroleum.
"Ethane is the second-largest component of natural gas, after methane."
"Pipelines carry liquefied ethane to petrochemical plants where it is cracked into ethylene for plastics production."
"Trace amounts of ethane have been detected in the atmosphere of Titan, Saturn's largest moon."
Rarely pluralised except when referring to substituted derivatives of ethane in chemistry.
"Halogenated ethanes were once widely used as refrigerants."
Ethane was named by taking 'ether' and adding the chemical suffix '-ane' — making it, quite literally, chemistry's word built from another word's bones.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of ethane
The word ethane was coined in the mid-nineteenth century from 'ether', the older name for a class of organic compounds, combined with the '-ane' suffix later adopted for saturated hydrocarbons. It entered English during the period when chemists were systematically naming the alkane series, alongside methane and propane. The root ultimately traces to Greek 'aithēr', meaning 'upper air'.
Related word forms
How ethane is actually used
A technical term used chiefly in chemistry, petrochemical engineering, and planetary science; in everyday speech it appears mainly when natural gas composition is discussed.
Easily confused with ethane
Methane is the simplest alkane (CH₄) with one carbon atom, while ethane has two carbon atoms and the formula C₂H₆.
Ethene is an unsaturated hydrocarbon containing a carbon–carbon double bond, whereas ethane is a saturated alkane with only single bonds.
Ether is a class of organic compounds or a volatile anaesthetic liquid, while ethane is a simple gaseous hydrocarbon; the two share an etymological root but nothing else.