Abstract
The solubility of sodium succinate in binary solvent mixtures was measured by an analytical stirred-flask method in the temperature range 278.15–318.15 K at atmospheric pressure. It was found that the solubility of sodium succinate in the system increased with increasing temperature and decreased with the increasing mass fractions of methanol or ethanol. The modified Apelblat equation, the Buchwski–Ksiazaczak λh equation and the combined nearly ideal binary solvent/Redlich–Kister (CNIBS/R–K) equation were proposed for correlating the experimental data. The modified Apelblat equation was found to regress the solubility data much better than the Buchwski–Ksiazaczak equation and the CNIBS/R–K equation in a binary solvent system. The dissolution enthalpy and dissolution entropy of sodium succinate were calculated from the solubility data, using the Van’t Hoff equation. The experiment results and correlation models could be used as essential data in the purification of sodium succinate.
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Acknowledgments
This research work was supported by the Fund for the Doctoral Program (No. 20113221110005) and the Fund for Agricultural Science and Technology Independent Innovation of Jiangsu Province in China. (No. CX(1212)3060). This research work also supported by 863 Project (No. 2011AA100901), the Ministry of Science and Technology, People’s Republic of China.
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Cao, Z., Hu, Y., Li, J. et al. Measurement and Correlation Solubility of Sodium Succinate in Binary Mixed Solvents of Water + (Methanol or Ethanol) Mixtures. J Solution Chem 43, 821–835 (2014). https://doi.org/10.1007/s10953-014-0168-1
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DOI: https://doi.org/10.1007/s10953-014-0168-1