"Coprecipitation studies were carried out for the more insoluble salts of six common metals and five anion systems. Three metal sulfides, namely, CuS, CdS and NiS, were the only metal salts studied that indicated nearly complete coprecipitation with phenolphthalein as carrier precipitate. The same salts showed almost no coprecipitation with B-naphthol as carrier precipitate. Solvent extraction of CuS with chloroform showed no significant amount of extraction had taken place. The data obtained in this work did not disclose any relationship between the extent of coprecipitation and the solubility product constant of the salt present. The main difficulty encountered at this stage in the work was the fact that high enough anion concentrations could not be obtained for systems other than the sulfide system due to the limitation of the solubilities of their anion sources. CuS, CdS, and NiS might have been coprecipitated by physical entrapments of their partially colloidal particles in the interstices of phenolphthalein"--Abstract, page ii.
Tappmeyer, Wilbur P.
Webb, William H.
Grice, Harvey H., 1912-1993
Bain, Lee J., 1939-
M.S. in Chemistry
University of Missouri at Rolla
vi, 51 pages
© 1965 Omar E. El-Arini, All rights reserved.
Thesis - Open Access
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El-Arini, Omar E., "Coprecipitation of metal salts with organic coprecipitants" (1965). Masters Theses. 6984.