The ratio of the total mass of a solute in the extract to that in the other phase.
- It is the product of the (concentration) distribution ratio and the appropriate phase ratio.
- It is synonymous with the concentration factor or mass distribution ratio, this latter term being particularly apt.
- The term concentration factor is often employed for the overall extraction factor in a process or process step.
PAC, 1993, 65, 2373 (Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations 1993)) on page 2384