What does butanol mean?
Butanol is a colourless, flammable organic compound belonging to the alcohol family, with the chemical formula C₄H₉OH. It exists in several structural isomers, of which the straight-chain form, 1-butanol (also called n-butanol or butyl alcohol), is the most commercially significant. In industry, butanol serves principally as a solvent for paints, coatings, resins, and polymers, prized because it evaporates more slowly than smaller alcohols such as ethanol, allowing smoother finishes. It also acts as an intermediate in manufacturing processes, including the production of esters and plasticisers. The word derives from butyric acid — named via Latin butyrum, meaning butter — combined with the chemical suffix '-ol' denoting an alcohol. Although firmly technical in register, butanol has gained wider attention through 'biobutanol', a biofuel produced by fermentation that has been investigated as a gasoline substitute, giving the term occasional appearances in energy and environmental reporting.
nounA colourless, flammable four-carbon alcohol (C₄H₉OH) used chiefly as an industrial solvent and as a feedstock in the manufacture of other chemicals.
- A four-carbon aliphatic alcohol (C₄H₉OH) occurring in several isomeric forms, especially the straight-chain 1-butanol used industrially as a solvent and chemical intermediate.
"The paint formulation relied on butanol as a slow-evaporating solvent to keep the finish smooth."
"Butanol evaporates more slowly than ethanol, making it useful in lacquers and coatings."
"Researchers are exploring biobutanol, produced by fermentation, as a potential renewable fuel additive."
The plural is used mainly when referring collectively to the different isomeric forms of the compound rather than to multiple quantities of one substance.
"The study compared the solvent properties of the various butanols."
The 'but-' in butanol is the same root that gives us the word 'butter' — chemists named it after butyric acid, which itself was named for rancid butter.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of butanol
Butanol takes its name from butyric acid, the four-carbon acid from which it can be derived; butyric acid itself was named after Latin butyrum, meaning 'butter', because it was first identified in rancid butter. The suffix '-ol', standard in chemical nomenclature since the 19th century, marks the compound as an alcohol. The same 'but-' element underlies related terms such as butane and butyric.
How butanol is actually used
Butanol is a technical term confined largely to chemistry, industry, and scientific writing; it does not appear in everyday conversation. When specificity matters, writers name the isomer explicitly (e.g., 1-butanol, tert-butanol), since the unqualified term can refer to any of several structural variants.
Easily confused with butanol
Butane is a gaseous hydrocarbon fuel (C₄H₁₀), whereas butanol is a liquid alcohol containing a hydroxyl group, used mainly as a solvent.