ABSTRACT

In this study, the solubility and density of a ternary system (KH2PO4 + KCl + H2O) at (288.15 and 303.15) K were determined, using isothermal solution saturation and wet residues. The equilibrium solids were detected by the Schreinemaker s method of wet residues and verified by X-ray diffraction (XRD). According to the experimental data, the diagram of density versus composition and the phase diagram were plotted. The crystallization regions of KH2PO4 and KCl were determined, and the crystallization region of KH2PO4 was much larger than that of KCl. The density of the saturated solution was calculated, and the model precision was tested. All results can offer fundamental basis for crystallization and separation processes in chemical industry.

Compounds

#	Formula	Name
1	H2KO4P	monopotassium phosphate
2	ClK	potassium chloride
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	2 3 1	Mass fraction - 1 ; Liquid	Temperature, K; Liquid Mass fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 2	gravimetric analysis	6
POMD	2 3 1	Mass fraction - 1 ; Liquid	Temperature, K; Liquid Mass fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	gravimetric analysis	23
POMD	2 3 1	Mass fraction - 1 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 2 Crystal - 1	gravimetric analysis	2
POMD	2 3 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mass fraction - 2; Liquid Mass fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	35
POMD	2 3 1	Mass fraction - 2 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 2 Crystal - 1	gravimetric analysis	2
POMD	2 3	Solid-liquid equilibrium temperature, K ; Liquid	Mass fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 2	gravimetric analysis	2
POMD	2 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mass fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	2
POMD	3 1	Mass fraction - 1 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	gravimetric analysis	2
POMD	3 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mass fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	2

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

Phase Equilibrium in the Aqueous Ternary System KH2PO4+ KCl +H2O at (288.15 and 303.15) K

Long, J.[Jun], Tang, J.-H.[Jian-Hua], You, Y.-K.[Yu-Kun], Guo, L.-M.[Lian-Mei], Chen, K.[Ke]

ABSTRACT