{"term":{"id":"01564","title":"degree of association","longtitle":"IUPAC Gold Book - degree of association","doi":"10.1351\/goldbook.D01564","code":"D01564","status":"current","definitions":[{"id":1,"text":"The number of surfactant ions in the micelle. It does not concern the location of the counterions.","contexts":[],"links":[{"term":"micelle","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/M03889"},{"term":"surfactant","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/S06194"}],"sources":["PAC, 1972, 31, 577. 'Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry' on page 612 (https:\/\/doi.org\/10.1351\/pac197231040577)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/D01564\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/D01564\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/D01564\/plain"},"citation":"Citation: 'degree of association' 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.D01564","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":"2026-07-02T13:33:48+00:00"}}