Abstract
Phase equilibria and critical phenomena in the cesium nitrate-water-diethylamine ternary system were studied by the visual-polythermal method over the temperature range 60–150 °C, where the boundary binary liquid system was characterized by stratification with a lower critical solution temperature (LCST). The introduction of cesium nitrate into the water-diethylamine system decreased the LCST of this system from 146.1 to 69.3°C and lowered the mutual solubility of the components. The diethylamine distribution coefficients between the aqueous and organic phases were calculated for monotectic equilibria at various temperatures. The salting out of diethylamine with cesium nitrate grew stronger as the temperature increased. The conclusion was drawn that the isotherms of the phase states of the system substantiated the generalized scheme of topological transformations of phase diagrams for salt-binary solvent ternary systems with salting out. The salting out effects of cesium and potassium nitrates on the water-diethylamine binary system were compared.
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Original Russian Text © K.K. Il’in, V.F. Kurskii, D.G. Cherkasov, 2008, published in Zhurnal Fizicheskoi Khimii, 2008, Vol. 82, No. 12, pp. 2260–2264.
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Il’in, K.K., Kurskii, V.F. & Cherkasov, D.G. Phase equilibria and critical phenomena in the cesium nitrate-water-diethylamine ternary system. Russ. J. Phys. Chem. 82, 2035–2038 (2008). https://doi.org/10.1134/S003602440812011X
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DOI: https://doi.org/10.1134/S003602440812011X