Water Effect on Solubilities of Lauric and Palmitic Acids in Ethanol and 2–Propanol Determined by Differential Scanning Calorimetry / Grazielle Oliveira; Andrea Briones Gonçalves Bonassoli; Marlus Pinheiro Rolemberg; Marilsa Aparecida Mota; Rodrigo Correa Basso; Rafael De Pelegrini Soares; Luciana Igarashi–Mafra; Marcos R. Mafra
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© 2021 American Chemical Society.In this work, the differential scanning calorimetry (DSC) technique was used to determine the antisolvent effect of water on solubilities of saturated fatty acids (lauric and palmitic acids) in organic solvents (ethanol and 2–propanol). The Apelblat semiempirical equation and activity coefficient models (Wilson, nonrandom two–liquid (NRTL), and universal quasichemical (UNIQUAC)) were correlated with the experimental data, showing good agreement. By comparing solubility data of fatty acids in anhydrous alcohols, it was possible to observe the reduction in solubility, confirming the effect of water as an antisolvent.
