Abstract
The solubilities of l-malic acid in pure and mixture organic solvents were measured from 278.15 to 323.15K using the laser monitoring observation system. The modified Apelblat equation, the semi-empirical Buchowski-Ksiazczak λh equation and the Combined Nearly Ideal Binary Solvent/Redlich (CNIBS/R-K) equation were proposed to correlate the experimental data. In pure and mixed solvents, the 100RD (relative deviation) <3.61 and 7.58, respectively, the 104RMSD (root-mean-square deviations) <3.07 and 2.28, respectively, so the equations selected in this work fit the data very well. Van't Hoff equation was used to predict the dissolution enthalpy and entropy of l-malic acid in the corresponding solvents.
Original language | English |
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Pages (from-to) | 466-471 |
Number of pages | 6 |
Journal | Fluid Phase Equilibria |
Volume | 360 |
DOIs | |
State | Published - 25 Dec 2013 |
Keywords
- Apelblat equation
- Buchowski-Ksiazczak equation
- Combined Nearly Ideal Binary Solvent/Redlich equation
- L-Malic acid
- Van't Hoff equation