Abstract
The solubilities of thirteen iodates of rare earth metals in aqueous and aqueous alcoholic solvent mixtures at 25°C were measured. Methanol and ethanol were used as the alcoholic components, and the alcohol concentrations in solvent mixtures were between 0–40 mass percent. From the solubilities measured in this study and the published data, the recommended solubility values of eleven iodates of rare earth metals [Ln(IO3)3: Ln=Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and Yb] in water at 25°C were decided by applying the guidelines of the IUPAC Solubility Data Project, and the solubilities of two iodates [Ln(IO3)3: Ce and Lu] are designated as tentative values. The change in solubility of lanthanide iodates in aqueous and aqueous alcoholic solvent mixtures as a function of lanthanide atomic number is discussed. The logarithm of the solubility decreases almost linearly with the reciprocal of the dielectric constant of the solvent mixture, as expected from Born's equation and its modifications.
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Presentation to First International Symposium on Solubility Phenomena, University of Western Ontario, London, Ontario, August 21–23, 1984.
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Miyamoto, H., Shimura, H. & Sasaki, K. Solubilities of rare earth lodates in aqueous and aqueous alcoholic solvent mixtures. J Solution Chem 14, 485–497 (1985). https://doi.org/10.1007/BF00646980
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DOI: https://doi.org/10.1007/BF00646980