Term: protogenic (solvent) https://doi.org/10.1351/goldbook.P04904 Definition: Capable of acting as a proton donor (strongly or weakly acidic as a Brønsted acid). The term is preferred to the synonym protic or the more ambiguous expression acidic by itself. Related Terms: 1) proton (http://doi.org/10.1351/goldbook.P04906). 2) protic (http://doi.org/10.1351/goldbook.P04900). 3) brønsted acid (http://doi.org/10.1351/goldbook.B00744). Source: PAC, 1983, 55, 1281. 'Glossary of terms used in physical organic chemistry' on page 1348 (https://doi.org/10.1351/pac198355081281) Citation: 'protogenic (solvent)' 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.P04904 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.