{"term":{"id":"01400","title":"critical solution point","longtitle":"IUPAC Gold Book - critical solution point","doi":"10.1351\/goldbook.C01400","code":"C01400","status":"current","also defines":"<em>also defines<\/em>: critical solution composition, critical solution temperature","synonym":"<em>synonym<\/em>: consolute point","definitions":[{"id":1,"text":"The point, with coordinates critical solution temperatures and critical composition, on a temperature-composition phase diagram at which the distinction between co-existent phases vanishes. In solid-solid, solid-liquid and liquid-liquid systems both upper and lower critical solution temperatures and corresponding 'critical solution compositions' can occur. Synonymous with consolute point.","sources":["PAC, 1994, 66, 577. 'Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)' on page 580 (https:\/\/doi.org\/10.1351\/pac199466030577)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/C01400\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/C01400\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/C01400\/plain"},"citation":"Citation: 'critical solution point' 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.C01400","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":"2026-04-21T11:14:44+00:00"}}