Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Phase Equilibrium of Aqueous Systems Containing 3-Methyl-1-vinylimidazolium Methyl Sulfate

Fedicheva, N.[Natalia], Ninni, L.[Luciana], Maurer, G.[Gerd]
J. Chem. Eng. Data 2007, 52, 6, 2228-2232
ABSTRACT
This paper reports experimental data for the activity of water in aqueous solutions of 3-methyl-1-vinylimidazolium methyl sulfate (QVI) at (298 and 338) K and the solid-liquid equilibrium for the ternary system (QVI + sodium sulfate + water) at the same temperatures. QVI is an ionic monomer which is gaining importance as a monomer for water-soluble polymers. The experimental data presented here are to contribute to a database which is needed to develop and test thermodynamic models for the description/prediction of phase equilibrium in aqueous solutions of such polyelectrolytes. The new experimental results for the activity of water are described by the VERS model of Groamann et al. for the excess Gibbs energy of aqueous solutions. Two interaction parameters were adjusted to correlate that data. The data set comprising the solid-liquid equilibrium was used for determining another set of interaction parameters (between that vinylimidazolium salt and sodium sulfate).
Compounds
# Formula Name
1 C7H12N2O4S 3-ethenyl-1-methyl-1H-imidazol-3-ium methyl sulfate
2 Na2O4S sodium sulfate
3 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
  • (Relative) activity - 3 ; Liquid
  • Temperature, K; Liquid
  • Mass fraction - 1; Liquid
  • Liquid
  • Gas
  • isopiestic method
  • 23
  • POMD
  • 3
  • 2
  • 1
  • Mass fraction - 2 ; Liquid
  • Mass fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 2
  • Titration method
  • 14
  • POMD
  • 3
  • 2
  • 1
  • Mass fraction - 2 ; Liquid
  • Mass fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal of intercomponent compound 1
  • Titration method
  • 13