In this study, the solubility of (KH2PO4 + KCl + H3PO4) at 298.15 K and 308.15 K were determined, using isothermal solution saturation. The equilibrium phase solid was verified by X-ray diffraction (XRD). Based on the experimental data, the phase diagrams were plotted. The crystalline regions of KH2PO4 and KCl were determined. The phase equilibrium in different phosphoric acid concentrations are compared and discussed. This comparison further illustrates that the phosphoric acid concentration can influence the equilibrium besides temperatures. All results can offer fundamental basis for crystallization and separation processes.
Compounds
#
Formula
Name
1
H2KO4P
monopotassium phosphate
2
ClK
potassium chloride
3
H2O
water
4
H3O4P
phosphoric acid
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.