[en] The effect of a salting-out electrolyte on the distribution coefficient for a metal in the extraction as its chelate compound is determined by two factors. These are the parameters, which are characteristics of a linear dependence of the distribution coefficient on the salting-out agent concentration (the Sechenov rule), and a nonlinear factor-complex formation with salting-out agent anions. The nature of the relationship between the Sechenov parameters and stability of metal complexes and associates, formed in the aqueous phase, has been examined. A method is suggested of estimation of possible concentration and separation of metals by using salting-out agents. LiClO₄ is suggested for concentration of In and Sc during solvent extraction with benzene solutions of tenoyltrifluoroacetone. LiCl is an optimum salting-out agent during separation of In and Sc