Abstract

The equilibrium molalities In 3+ in {In 2(SO 4) 3 + Na 2SO 4 + HDEHMTPCA + n-C 8H 18 + water} were measured at ionic strength from (0.1 to 2.0) mol · kg −1 containing Na 2SO 4 as supporting electrolyte in aqueous phase and at constant molality extractant at temperatures from (278.15 to 303.15) K in organic phase. The standard extraction constants K 0 at various temperatures were obtained by methods of extrapolation and polynomial approximation. Thermodynamic quantities for the extraction process were calculated.

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