Term: amphoteric
https://doi.org/10.1351/goldbook.A00306

Definition:
A chemical species that behaves both as an acid and as a base is called amphoteric. This property depends upon the medium in which the species is investigated: H2SO4 is an acid when studied in water, but becomes amphoteric in superacids.

Related Terms:
1) chemical species (http://doi.org/10.1351/goldbook.CT01038).
2) superacids (http://doi.org/10.1351/goldbook.S06135).

Source: PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1083 (https://doi.org/10.1351/pac199466051077)

Citation: 'amphoteric' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.A00306

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