{"term":{"id":"01180","title":"colour indicator","longtitle":"IUPAC Gold Book - colour indicator","doi":"10.1351\/goldbook.C01180","code":"C01180","status":"current","also defines":"<em>also defines<\/em>: one-colour indicator, two-colour indicator","mentioned":"<em>mentioned<\/em>: one-color indicator, two-color indicator","synonym":"<em>synonyms<\/em>: color indicator, indicator","definitions":[{"id":1,"text":"An indicator which is classified as one- or two-colour, depending on whether it is colourless on one side of the transition interval or possesses a different colour on each side of this range.","links":[{"term":"acid–base indicator","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/A00075"},{"term":"adsorption indicator","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/A00162"},{"term":"mixed indicator","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/M03942"}],"sources":["Orange Book, 2nd ed., p. 48 (https:\/\/media.iupac.org\/publications\/analytical_compendium\/)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/C01180\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/C01180\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/C01180\/plain"},"citation":"Citation: 'colour indicator' 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.C01180","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":"2026-06-06T16:49:56+00:00"}}