Abstract
The two-phase distribution of americium(III) and europium (III) has been studied between the hexane solution of tributylphosphate (TBP) and the aqueous solution of sodium thiocyanate at 25°C. From the distribution data when the organic phase was 5% (by volume) TBP in hexane and the aqueous phase was 5 M Na(SCN, ClO4), the following equilibrium constants have been obtained by a least-squares method: