Title: extract
Long Title: IUPAC Gold Book - extract
DOI: 10.1351/goldbook.E02297
Status: current

Definition
To transfer a solute from a liquid phase to another immiscible or partially miscible liquid phase in contact with it. The term is also applied to the dissolution of material from a solid phase with a liquid in which it is not wholly soluble (i.e. leaching).

Related Terms
- dissolution: https://goldbook.iupac.org//terms/view/D01806
- solvent extraction: https://goldbook.iupac.org//terms/view/S05752

Sources
- Orange Book, 2nd ed., p. 95 (https://media.iupac.org/publications/analytical_compendium/)
- PAC, 1993, 65, 2373. 'Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations 1993)' on page 2377 (https://doi.org/10.1351/pac199365112373)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/E02297/html
- json: https://goldbook.iupac.org/terms/view/E02297/json
- xml: https://goldbook.iupac.org/terms/view/E02297/xml

Citation: Citation: 'extract' 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.E02297
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.
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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: 2026-07-28T18:45:44+00:00