Abstract
The density of solutions of dimethylsulfoxide (DMSO) in monoethanolamine (MEA) is measured using an oscillation-type density meter in the 0–0.5 mole fraction range of DMSO concentrations and the 5–65°C range of temperatures. Excess molar volumes of the mixture, apparent molar volumes of DMSO and MEA, partial molar volumes, and excess partial molar volumes of DMSO in a mixture in the investigated range of temperatures are calculated. The concentration and temperature dependences of the calculated values are discussed in terms of the presence of solvophobic effects in the studied solutions. The results are compared to the solvophobic effects in aqueous and ethylene glycol solutions of DMSO. A conclusion is drawn regarding the weaker solvophobic effects of DMSO in MEA when compared to water and ethylene glycol, and about the possible reaction in the investigated system.
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ACKNOWLEDGMENTS
The authors are grateful to L.G. Klapshin, Cand. Sci. (Chem.), for discussing the interaction between MEA and DMSO.
This work was performed as part of a State Task for the Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, in the field of basic scientific research. It was supported by the Russian Foundation for Basic Research, grant no. 16-03-00897.
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Translated by E. Boltukhina
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Solonina, I.A., Makarov, D.M., Egorov, G.I. et al. Bulk Properties of Solutions of Dimethylsulfoxide in Monoethanolamine. Russ. J. Phys. Chem. 93, 851–855 (2019). https://doi.org/10.1134/S0036024419050273
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DOI: https://doi.org/10.1134/S0036024419050273