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Partition coefficient

Measure of the relative affinities of the sorbed and fluid phases for solute.


  • Robert H. Perry, Don W. Green, Perry's Chemical Engineers' Handbook,seventh edition.

Partition coefficient (P) is defined as the ratio of the equilibrium concentrations (ci) of a dissolved substance in a two-phase system of two largely immiscible solvents.

In the case n-octanol and water:



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