Title: baseline toxicity Long Title: IUPAC Gold Book - baseline toxicity DOI: 10.1351/goldbook.14461 Status: current Definition General, nonspecific, reversible mode of toxic action that can be produced in most living organisms by the presence of sufficient amounts of many organic chemicals. Notes 1) Effects result from the general disruption of cellular activity. The mechanism producing disruption is unknown, with the main theories being binding to proteins in cell membranes and "swelling" of the lipid portion of cell membranes resulting from the presence of organic chemicals. 2) Hydrophobicity dominates the expression of baseline toxicity. Source - PAC, 2009, 81, 829. 'Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)' on page 843 (https://doi.org/10.1351/PAC-REC-08-07-09) Other Outputs - html: https://goldbook.iupac.org/terms/view/14461/html - json: https://goldbook.iupac.org/terms/view/14461/json - xml: https://goldbook.iupac.org/terms/view/14461/xml Citation: Citation: 'baseline toxicity' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.14461 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. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . 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. Accessed: 2026-06-30T15:26:15+00:00