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Experimental data and thermodynamic modelling of gallic acid solubility in a variety of pure solvents.
- Source :
-
Physics & Chemistry of Liquids . May/Jun2019, Vol. 57 Issue 3, p311-324. 14p. - Publication Year :
- 2019
-
Abstract
- The solubility of gallic acid (GA) in butan-1-ol, butan-2-ol, hexan-1-ol, 1,4-dioxane, ethyl acetate, methyl acetate and cyclohexanone from 293.15 to 318.15 K has been experimentally measured using a thermostatted reactor and UV/vis spectrophotometer analysis. The results demonstrate that the solubility of GA generally increased with the temperature and at a given temperature decreased with the increase of the carbon number of alcohols. The van't Hoff model, modified Apelblat equation, h equation and the Two Local composition models of Wilson and NRTL model were used to predict the reported solubilities, resulting in a mean relative deviation of 3.47%, 3.54%, 2.90%, 3.12% and 3.18%, respectively. The obtained data showed that the h equation model is the most suitable for description of the solid-liquid equilibrium containing GA. Furthermore, the standard molar Gibbs energy and standard molar enthalpy of dissolution of GA were estimated. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00319104
- Volume :
- 57
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Physics & Chemistry of Liquids
- Publication Type :
- Academic Journal
- Accession number :
- 135096033
- Full Text :
- https://doi.org/10.1080/00319104.2018.1443454