ABSTRACT

Phase equilibria studies of the system K2SO4 MnSO4 H2O published revealed discrepancies between the data presented in the literature regarding the solid phases formed at ambient temperatures. The solubility in the system at 298K and 313K was determined. At 298 K, the existence of the double salt K2SO4*3MnSO4*5H2Oand ofMnSO4*H2Owas confirmed. The examinations at 313Kshowed the formation of the stable solid phases MnSO4*H2O, K2SO4*2MnSO4, K2SO4*MnSO4*1.5H2O, K2SO4 and the formation of a metastable phase K2SO4*MnSO4*2H2O.

Compounds

#	Formula	Name
1	K2O4S	potassium sulfate
2	MnO4S	manganese(II) 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 2	Molality, mol/kg - 1 ; Liquid	Temperature, K; Liquid Solvent: Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	Titration Method	33
POMD	3 1 2	Molality, mol/kg - 2 ; Liquid	Temperature, K; Liquid Solvent: Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 2	Titration	33
POMD	3 1	Molality, mol/kg - 1 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	Titration Method	2

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Solid-liquid phase equilibria in the system K2SO4-MnSO4-H2O at 298 K and 313 K

Wollmann, G.[Georgia], Voigt, W.[Wolfgang]

ABSTRACT