Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Experimental investigation of the solid-liquid phase eqilibria in the water - ammonium methanesulfonate and in the water - sodium methanesulfonate systems

Kosova, D. A.[Daria A.], Navalayeu, T. I.[Tsimafei I.], Maksimov, A. I.[Aleksey I.], Babkina, T. S.[Tatiana S.], Uspenskaya, I. A.[Irina A.]
Fluid Phase Equilib. 2017, 443, 23-31
ABSTRACT
The thermal stability of ammonium and sodium methanesulfonates was investigated under inert atmosphere by thermogravimetry. Temperatures and enthalpies of phase transitions were determined for these salts by means of differential scanning calorimetry (DSC). It was shown that sodium salt melts congruently. Solid-liquid phase equilibria in the binary water salt systems were studied. It was found that hydrate is formed in the water sodium methanesulfonate system. Melting parameters and composition of this hydrate (NaSO3CH3*8H2O) were evaluated with the help of DSC. The data on the density of the methanesulfonates aqueous solutions in a wide range of concentrations at 25.00 deg C were obtained.
Compounds
# Formula Name
1 CH3NaO3S sodium methanesulfonate
2 CH7NO3S ammonium methanesulfonate
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
  • 1
  • Triple point temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DSC
  • 1
  • POMD
  • 1
  • Molar enthalpy of transition or fusion, kJ/mol ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DSC
  • 1
  • POMD
  • 2
  • Triple point temperature, K ; Crystal 2
  • Crystal 2
  • Crystal 1
  • Air at 1 atmosphere
  • DSC
  • 1
  • POMD
  • 2
  • Triple point temperature, K ; Crystal 1
  • Crystal 1
  • Liquid
  • Air at 1 atmosphere
  • DSC
  • 1
  • POMD
  • 2
  • Molar enthalpy of transition or fusion, kJ/mol ; Crystal 2
  • Crystal 2
  • Crystal 1
  • Air at 1 atmosphere
  • DSC
  • 1
  • POMD
  • 2
  • Molar enthalpy of transition or fusion, kJ/mol ; Crystal 1
  • Crystal 1
  • Liquid
  • Air at 1 atmosphere
  • DSC
  • 1
  • POMD
  • 3
  • 2
  • Eutectic temperature, K ; Crystal - 2
  • Crystal - 2
  • Crystal - 3
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 3
  • 2
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 3
  • DTA
  • 7
  • POMD
  • 3
  • 2
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 3
  • Solubility
  • 8
  • POMD
  • 3
  • 2
  • Mass density, kg/m3 ; Liquid
  • Mole fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Vibrating tube method
  • 9
  • POMD
  • 1
  • 3
  • Peritectic temperature, K ; Crystal - 1
  • Crystal - 1
  • Crystal of intercomponent compound 1
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 1
  • 3
  • Eutectic temperature, K ; Crystal - 3
  • Crystal - 3
  • Crystal of intercomponent compound 1
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 1
  • 3
  • Mass density, kg/m3 ; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Vibrating tube method
  • 9
  • POMD
  • 1
  • 3
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 3
  • DTA
  • 9
  • POMD
  • 1
  • 3
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • Solubility
  • 12