What does sulphated mean?
Sulphated describes a substance that contains sulphate or sulphuric-acid-derived groups, or that has been chemically treated with sulphuric acid. It can function as an adjective, as in “sulphated peptide,” or as a participial form of the verb “to sulphate.” In chemistry and biochemistry, the adjective commonly identifies molecules carrying negatively charged sulphate groups. Such groups can influence a molecule’s solubility, stability, and biological activity; sulphated forms of heparin, for example, are important to blood-clotting regulation. In industrial contexts, sulphating may mean introducing sulphate groups or using sulphuric acid during processing. The term is principally technical. British English normally spells it “sulphated,” while the common North American spelling is “sulfated.”
Containing sulphate or sulphuric-acid-derived groups, or having been treated with sulphuric acid.
"The molecule contains a sulphated carbohydrate chain."
Used mainly in technical contexts, especially chemistry and biochemistry.
To convert a substance into a sulphate or treat it with sulphuric acid.
"The process sulphates the alcohol before the solution is concentrated."
Usually encountered in technical or industrial descriptions rather than everyday speech.
Sulphate groups can profoundly affect biology: in molecules such as heparin, they are central to the regulation of blood clotting.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does sulphated come from?
The word is formed from “sulphate” with the participial ending “-ed.” “Sulphate” comes through the Latin word sulphas, meaning “sulphur,” and belongs to the same Latin-derived family as English “sulphur,” “sulphuric,” and “sulphurous.” The British spelling with ph reflects the established British form of these scientific words.
Related word forms
How sulphated is actually used
The spelling with ph is standard in British English; North American English normally uses sulfated. The word is chiefly technical and is more common in chemistry, biochemistry, and industrial processing than in general speech.
Easily confused with sulphated
A sulphated compound contains sulphate or sulphuric-acid-derived groups, whereas a sulphide contains sulphur in combination with another element.