Measurement and correlation solubility and mixing properties of l-malic acid in pure and mixed organic solvents

Yumei Kai, Yonghong Hu, Zheng Cao, Xiang Liu, Yan Liu, Wenge Yang

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

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 languageEnglish
Pages (from-to)466-471
Number of pages6
JournalFluid Phase Equilibria
Volume360
DOIs
StatePublished - 25 Dec 2013

Keywords

  • Apelblat equation
  • Buchowski-Ksiazczak equation
  • Combined Nearly Ideal Binary Solvent/Redlich equation
  • L-Malic acid
  • Van't Hoff equation

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