Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Solid-liquid equilibria of the binary system (Mn(NO3)2+ H2O) and the ternary system (Mn(NO3)2+ Fe(NO3)3+ H2O) at 0 degC and 20 degC

Maous, Jaafar, Kaddami, Mohammed
Fluid Phase Equilib. 2018, 467, 1-7
ABSTRACT
The solid-liquid equilibria of the binary system (Mn(NO3)2+H2O) and the ternary system (Mn(NO3)2+Fe(NO3)3+H2O) at 0 degC and 20 degC were studied under air pressure using a synthetic method based on conductivity measurements. The branch of solubility of manganese nitrate tetrahydrate in the binary system was reviewed and clearly redefined in order to explain the scatter of solubility values in previous studies. The characterization of solid phases formed in the two isotherms of the ternary system was conducted using chemical analysis, atomic absorption spectroscopy (AAS), X-ray diffraction (XRD) and was confirmed by Schreinemaker's method of wet residue and the 'ensembles ' method. The stable solid phases in both isotherms are: manganese nitrate hexahydrate (Mn(NO3)2.6H2O) and iron nitrate nonahydrate (Fe(NO3)3.9H2O).
Compounds
# Formula Name
1 H2O water
2 MnN2O6 manganese nitrate
3 FeN3O9 ferric nitrate
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
  • Mass fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • Titration method
  • 7
  • POMD
  • 2
  • 1
  • Mass fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal of intercomponent compound 1
  • Titration method
  • 10
  • POMD
  • 2
  • 1
  • Peritectic temperature, K ; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal of intercomponent compound 1
  • Crystal of intercomponent compound 2
  • Titration and conductivity measurements
  • 1
  • POMD
  • 2
  • 1
  • Mass fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Crystal of intercomponent compound 1
  • Crystal of intercomponent compound 2
  • Titration method
  • 1
  • POMD
  • 2
  • 1
  • Mass fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal of intercomponent compound 2
  • Titration method
  • 4
  • POMD
  • 2
  • 1
  • Mass fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal of intercomponent compound 2
  • Titration method
  • 5
  • POMD
  • 2
  • 1
  • Mass fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal of intercomponent compound 1
  • Atomic absorption spectroscopy
  • 1
  • POMD
  • 2
  • 1
  • Mass fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal of intercomponent compound 2
  • Atomic absorption spectroscopy
  • 1
  • POMD
  • 3
  • 2
  • 1
  • Mass fraction - 3 ; Liquid
  • Temperature, K; Liquid
  • Mass fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal of intercomponent compound 3
  • Titration method
  • 25
  • POMD
  • 3
  • 2
  • 1
  • Mass fraction - 3 ; Liquid
  • Temperature, K; Liquid
  • Mass fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal of intercomponent compound 1
  • Titration method
  • 7
  • POMD
  • 3
  • 1
  • Mass fraction - 3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal of intercomponent compound 3
  • Titration method
  • 2