EXTRACTION OF CHLORIDE ACIDOCOMPLEXES OF MANGANESE (II) BY DIANTIPYRILALKANES FROM SOLUTIONS CONTAINING SALICYLIC ACID (PHARA-PHENOL-SULFONIC CID), WATWR AND SALTING-OUT AGENT
The extraction of manganese (II) ions in phase-separation systems diantipyrilmethane (DAM) (its homologues) - salicylic acid - hydrochloric acid - water and DAM (its homologues) - phara-phenol-sulfonic acid (p-PSA) - hydrochloric acid - water was investigated. The effect of hydrogen ions, chloride ions and reagent concentrations on extraction of manganese (II) was shown. The composition of the extracted complex compounds was found, and the mechanism of extraction was proposed. The values [Cl-]1/2 and [R]1/2 were located in a number of reagents. The extraction and complex distribution constants were calculated. The role of salicylic acid and phara-phenol-sulfonic acid in the extraction processes was identified; and a number of salting-out agents, providing maximum extraction of manganese (II) ions was made.