in solvent extraction
Also contains definition of: cosolvent
The liquid or homogeneous mixture of liquids in which @[email protected](s) and possible modifier(s) may be dissolved to form the solvent phase.
  1. The term @[email protected], which implies an @[email protected] diluent is not recommended.
  2. Although the diluent may well be a single liquid or even the major portion of the extracting phase, the term solvent should not be used in this sense as it has a much wider meaning in the context of @[email protected], although the term cosolvent may be used in certain circumstances.
  3. The diluent by itself does not extract the main (extractable) solute appreciably.
PAC, 1993, 65, 2373. (Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations 1993)) on page 2380 [Terms] [Paper]