Abstract
The solvent extraction behaviour of solutions of Versatic 10, naphthenic, 2-bromodecanoic and 3,5-diisopropylsalicylic acids in xylene towards a large number of metal cations is described. The effect of the structure of the carboxylic acids upon their extraction behaviour is discussed, and relationships between the experimental pH 0.5 values and characteristic properties of the metal cations, such as the stability constants of carboxylate complexes and ionic radii, are examined. For some metals (Cu 2+, Zn 2+, Cd 2+, Hg 2+, Pd 2+, Fe 3+, AI 3+, Ga 3+, In 3+, and Tl 3+), a comparison of their extraction from nitrate and, chloride media has been made, and the observed differences have been quantitatively related to the formation constants of the chloro-complexes of the respective metals.
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