Study on the phase equilibrium of the quaternary systems Na+ (K+)//H2PO4−, Cl−, SO42−–H2O at 313.15 K

KH2PO4 Production by Cooling Crystallization Using Its Phase Equilibrium in the KH2PO4‐KCl‐C2H5OH‐H2O System

“…S1 in the Supporting Information shows a typical XRD pattern of the residual solid. All the main peaks were in good agreement with the standard values for KCl and KH 2 PO 4 , which is consistent with the previous conclusion [20,26] the solution are shown in Fig. 4.…”

“…Solubility and physicochemical properties (m, r) were determined experimentally. The effect of aqueous ethanol solutions (10,15,20,25 ] density…”

“…The H 2 PO 4 -concentration was measured by the quinoline phosphomolybdate gravimetric method with a relative standard uncertainty of 0.01 [20,25]. The density was measured by weighing bottle method with a relative standard uncertainty of 0.005.…”

“…Finally, the composition of the equilibrium liquid phase and the wet residue were determined by chemical analysis. The wet residue was filtered off, dried at 333.15 K by circulating water pumps, ground in an agate mortar, and analyzed by X‐ray diffraction .…”

“…The wet residue was filtered off, dried at 333.15 K by circulating water pumps, ground in an agate mortar, and analyzed by X-ray diffraction [20].…”