Term: xanthic acids [obsolete] https://doi.org/10.1351/goldbook.X06696 Definition: Compounds having the structure ROC(=S)SH. Thus O-esters of dithiocarbonic acid. Salts and esters of xanthic acid are xanthates. Use of this term is not recommended. Related Terms: 1) esters (http://doi.org/10.1351/goldbook.E02219). 2) xanthates (http://doi.org/10.1351/goldbook.X06694). Source: PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1374 (https://doi.org/10.1351/pac199567081307) Citation: 'xanthic acids <span class='text-danger'>[obsolete]</span>' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.X06696 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. 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.