Title: cation exchanger
Long Title: IUPAC Gold Book - cation exchanger
DOI: 10.1351/goldbook.C00909
Status: current

Definition
Ion exchanger with cations as counter-ions. The term cation-exchange resin may be used in the case of solid organic polymers. The acid form of a cation exchanger is the ionic form of a cation exchanger in which counter-ions are hydrogen ions (H-form) or the ionogenic groups have added a proton forming an undissociated acid.

Related Terms
- Ion exchanger: https://goldbook.iupac.org/terms/view/I03171
- cation: https://goldbook.iupac.org/terms/view/C00907
- counter-ions: https://goldbook.iupac.org/terms/view/C01371
- ionogenic groups: https://goldbook.iupac.org/terms/view/I03228
- proton: https://goldbook.iupac.org/terms/view/P04906
- resin: https://goldbook.iupac.org/terms/view/RT07166

Source
- PAC, 1993, 65, 819. 'Nomenclature for chromatography (IUPAC Recommendations 1993)' on page 855 (https://doi.org/10.1351/pac199365040819)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/C00909/html
- json: https://goldbook.iupac.org/terms/view/C00909/json
- xml: https://goldbook.iupac.org/terms/view/C00909/xml

Citation: Citation: 'cation exchanger' 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.C00909
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Accessed: 2026-07-27T06:34:19+00:00