Crowding

{
  "id": "MLC-T-CHM-002737",
  "term": "Crowding",
  "field": "Chemistry",
  "definition": "A solvent extraction step in which an impurity held in the extract phase is pushed back into the aqueous phase by contacting the extract with a solution of the main extractable solute. The main solute must be extracted more strongly than the impurities, as shown by a higher distribution ratio, but it need not be pure. It is a form of scrubbing in which the product itself, rather than a separate reagent, displaces the contaminant.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "exchange extraction",
    "scrubbing"
  ],
  "references": [
    "PAC, 1993, 65, 2373. 'Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations 1993)' on page 2386 (https://doi.org/10.1351/pac199365112373)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/crowding/"
}