Thermodynamics Research Center / ThermoML | Thermochimica Acta

Measurement and correlation of the solubility of urea l-tartaric acid in aqueous ethanol solution

Hu, Y.[Yonghong], Chen, X.[Xiao], Yang, W.[Wenge], Guan, J.[Jun]
Thermochim. Acta 2009, 484, 1-2, 38-40
ABSTRACT
Date on the solubility of urea l-tartaric acid in aqueous ethanol solution are essential for industrial design and further theoretical studies. Using a laser monitoring system, the solubility of urea l-tartaric acid in aqueous ethanol solution at different temperatures was measured using the synthetic method. For the temperature range investigated, the solubilities of urea l-tartaric acid in the solvents increased with increasing temperature. The solubility data were correlated with Apelblat equation and Buchowski Ksi^2azczak h equation. The Apelblat equation can regress the solubility datamuch better than Buchowski Ksi^2azczak h equation. This study provides valuable data for the mechanism and preparation of the available crystal form of urea l-tartaric acid.
Compounds
# Formula Name
1 H2O water
2 C2H6O ethanol
3 C5H10N2O7 urea l-tartrate
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
  • 2
  • 1
  • 3
  • Mole fraction - 3 ; Liquid
  • Solvent: Mole fraction - 2; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 3
  • Phase equilibration
  • 36
  • POMD
  • 1
  • 3
  • Mole fraction - 3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 3
  • Phase equilibration
  • 6
  • POMD
  • 2
  • 3
  • Mole fraction - 3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 3
  • Phase equilibration
  • 6