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2. Solubility Measurement of Lauric, Palmitic, and Stearic Acids in Ethanol, n-Propanol, and 2-Propanol Using Differential Scanning Calorimetry

Author

Gonçalves Bonassoli, Andrea Briones, Oliveira, Grazielle, Bordón Sosa, Filipe Hobi, Rolemberg, Marlus Pinheiro, Mota, Marilsa Aparecida, Basso, Rodrigo Corrêa, Igarashi-Mafra, Luciana, and Mafra, Marcos R.

Abstract

The solubility of saturated fatty acids is essential for the design and operation of separation and purification units, since crystallization is the main method used in these cases. In this work, differential scanning calorimetry (DSC) was used to determine the solubility of lauric, palmitic, and stearic acid in alcoholic solvents (ethanol, n-propanol and 2-propanol). Comparison with literature data confirmed the efficacy and precision of the DSC technique. For the three saturated fatty acids evaluated, the solubility was highest in 2-propanol and lowest in ethanol. Activity coefficient models (Margules, Wilson, and nonrandom two-liquids models) were correlated with the experimental data, showing good agreement.

Published
2019
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