Experiment technique. For extraction used binary extractant tetraethyl ammonium stearate. Tetraethyl ammonium bromide was used as the starting compound. Binary extractant was obtained by shaking an aqueous solution containing bromide of tetraethyl ammonium and sodium stearate with a molar ratio 1:1. The resulting dispersion solution was filtered using a water pump, washed with distilled water and dried at a temperature of 400C within 2 hours in a drying cabinet. When studying the dissolution of the obtained binary extractant, it has been found,  that in acetone it dissolves a little, in chloroform it dissolves more, than in acetone, and it's practically insoluble in other solvents. For extraction experiments chloride salts of metals were used.