Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Solubilities of oleanolic acid and ursolic acid in (ethanol + water) mixed solvents from T = (292.2 to 328.2) K

Fan, J.-P.[Jie-Ping], Kong, T.[Tao], Zhang, X.-H.[Xue-Hong], Zhang, L.[Lu], Tong, S.[Sheng], Tian, Z.-Y.[Zhe-You], Zhu, J.-H.[Jian-Hang]
J. Chem. Thermodyn. 2012, 47, 372-375
ABSTRACT
The solubility of oleanolic acid and of ursolic acid in (ethanol + water) mixed solvents was measured over the temperature range of (292.2 to 328.2) K. The solubility of oleanolic acid and of ursolic acid in the (ethanol + water) mixed solvent systems increase with increasing the mole fraction of ethanol in mixed solvents. The experimental solubility data are correlated by a simplified thermodynamic equation and the modified Apelblat equation.
Compounds
# Formula Name
1 C30H48O3 oleanolic acid
2 C30H48O3 ursolic acid
3 C2H6O ethanol
4 H2O water
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 3
  • 1
  • 4
  • Mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Solvent: Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • Chromatography
  • 20
  • POMD
  • 3
  • 2
  • 4
  • Mole fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Solvent: Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 2
  • Chromatography
  • 20