Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Liquid-liquid equilibrium measurement and thermodynamics modeling for the systems water + thioglycolic acid + isopropyl ether/methyl tert-butyl ether at 298.15 and 308.15 K

Yan, Peisong, Xu, Dongmei, Wang, Ping, Gao, Jun, Zhang, Lianzheng, Wang, Yinglong
Fluid Phase Equilib. 2018, 476, 126-130
ABSTRACT
To separate thioglycolic acid (TGA) from its aqueous mixture, isopropyl ether and methyl tert-butyl ether were adopted as extractants, and the liquid-liquid equilibrium data for the ternary systems water + TGA + isopropyl ether/methyl tert-butyl ether were determined at 298.15 K and 308.15 K under pressure of 101.3 kPa. The influence of the different extractants and temperatures on the phase behavior was explored. In addition, the measured experimental data were correlated by the nonrandom two-liquid (NRTL) and universal quasi-chemical (UNIQUAC) activity coefficient models, and the binary interaction parameters of the two models were also optimized.
Compounds
# Formula Name
1 C2H4O2S 2-mercaptoacetic acid
2 H2O water
3 C6H14O diisopropyl ether
4 C5H12O 2-methoxy-2-methylpropane
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 - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 21
  • POMD
  • 2
  • 1
  • 3
  • Mole fraction - 2 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Mole fraction - 1; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 21
  • POMD
  • 2
  • 1
  • 4
  • Mole fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 22
  • POMD
  • 2
  • 1
  • 4
  • Mole fraction - 2 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Mole fraction - 1; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • 22