What does butane mean?
Butane is a colorless, odorless, highly flammable hydrocarbon gas with the formula C₄H₁₀, belonging to the alkane family that includes methane, ethane, and propane. It occurs naturally in crude oil and natural gas and is extracted during petroleum refining, then compressed into a liquid for storage and transport — which is why it appears in pressurized canisters rather than open containers. Its best-known uses are as the fuel in disposable lighters, portable camping stoves, and blowtorches, and as a propellant in aerosol sprays. Because it vaporizes poorly in low temperatures, outdoor users in cold climates often favor propane instead. The word was coined in the nineteenth century from butyric acid, whose name derives from the Latin term for butter, giving butane an unexpectedly culinary origin. Chemically, butane exists as two isomers, normal butane and isobutane, each with slightly different properties and industrial applications.
nounA flammable, colorless gaseous hydrocarbon of the alkane series, C₄H₁₀, obtained chiefly from natural gas and petroleum refining and used as a fuel, notably in lighters and portable stoves.
- The flammable hydrocarbon gas C₄H₁₀ of the alkane series, occurring in natural gas and liquefied for use as fuel.
- (Chemistry) Either of two isomeric forms of this compound — normal butane and isobutane.
"The campers cooked their dinner on a small stove powered by a canister of butane."
"She refilled her lighter with a small canister of butane before the trip."
"In cold weather, campers often prefer propane because butane does not vaporize as readily at low temperatures."
The plural is rare in everyday use and appears mainly in technical writing when distinguishing between the isomers n-butane and isobutane.
"The two butanes differ slightly in boiling point and are separated industrially by distillation."
The 'but' in butane comes ultimately from the Latin word for butter — chemists named it after the fatty acid found in rancid butter.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of butane
The word butane was coined in the mid-nineteenth century by French chemists from 'butyric acid', the compound responsible for the smell of rancid butter. Butyric acid's name traces back through French butyrique to Latin butyrum, meaning butter, which itself came from Greek boutyron. The suffix '-ane' follows the standard convention for naming saturated hydrocarbons in organic chemistry, placing butane alongside its relatives methane, ethane, and propane.
Related word forms
How butane is actually used
Butane is almost always used in technical, commercial, or everyday practical contexts relating to fuel and chemistry; it carries no figurative or emotional connotation. In casual speech it is frequently encountered in the phrase 'butane lighter' or in discussions of camping equipment.
Easily confused with butane
Propane is a related three-carbon gas (C₃H₈) that stays liquid under higher pressures and works better in cold climates, while butane is the four-carbon gas C₄H₁₀ typically used in lighters and indoor camping stoves.
Butyl is a chemical group derived from butane by removing one hydrogen atom, whereas butane itself is the complete hydrocarbon molecule.