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

Density of the NaAlF4 + KAlF4 Electrolyte, Saturated with Alumina

Chrenkova, M.[Marta], Silny, A.[Alexander], Simko, F.[Frantisek], Thonstad, J.[Jomar]
J. Chem. Eng. Data 2010, 55, 9, 3438-3440
ABSTRACT
Density data were determined for melts with the equimolar composition NaAlF4 + KAlF4, saturated with alumina, over the temperature range (650 to 750) deg C. The density measurements were performed in a platinum crucible with 5 % alumina added, as well as in a sintercorundum crucible with the same amount of alumina, to ensure alumina saturation. From both overall regression equations obtained from the measurements in sintercorundum and platinum crucibles, the density values were very close, indicating that the system in the platinum crucible with 5 % alumina added was saturated. By combining the equations for both sets of measurements, the final equation was: ?/g*cm-3 = 2.5321 - (9.598*10-4)t/deg C.
Compounds
# Formula Name
1 AlF4Na sodium tetrafluoroaluminate
2 AlF4K potassium tetrafluoroaluminate
3 Al2O3 aluminum oxide (Al2O3)
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
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Mole fraction - 1; Liquid
  • Liquid
  • Crystal - 3
  • Buoyancy - hydrostatic balance
  • 849