Title: spontaneous termination Long Title: IUPAC Gold Book - spontaneous termination DOI: 10.1351/goldbook.15422 Status: current Definition Chain termination proceeding as a unimolecular process. Source - PAC, 2008, 80, 2163. 'Glossary of terms related to kinetics, thermodynamics, and mechanisms of polymerization (IUPAC Recommendations 2008)' on page 2184 (https://doi.org/10.1351/pac200880102163) Other Outputs - html: https://goldbook.iupac.org/terms/view/15422/html - json: https://goldbook.iupac.org/terms/view/15422/json - xml: https://goldbook.iupac.org/terms/view/15422/xml Citation: Citation: 'spontaneous termination' 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.15422 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: 2026-04-18T06:46:24+00:00