Solubility, density, conductivity, and phase equilibrium of NaBr - Ba(H₂PO₂)₂ - H₂O ternary system at 298 K

Composition-property diagrams of NaBr-Ba(H₂PO₂)₂ -H₂O ternary water-salt system, which is contained within A⁺, B⁺⁺/ X^-, (H₂PO₂)- // H₂O (A⁺= Na⁺, Li⁺, K⁺, NH4⁺ etc.); (B⁺⁺= Ba⁺⁺, Fe⁺⁺, Mg⁺⁺, Cu⁺⁺, Ni⁺⁺ etc.); (X^- = Cl^-, I^-, Br^- etc.) Na⁺, Ba⁺⁺/ Br^-, (H₂PO₂) -//H₂O quaternary water-salt system were drawn with the isothermal method. In this study, the phase equilibria of the NaBr -Ba(H₂PO₂)₂- H₂O triple system that are included in the quaternary mutual water-salt system containing Na⁺, Ba⁺²/Br^-, (H₂PO₂)-//H₂O, at 298 K were investigated. The physicochemical properties of the liquid phase, which is in equilibrium with the solid phases of the system, such as density and conductivity were also studied. The system’s solubility, density, conductivity, and equilibrium phases were studied, with the use of a special glass container placed in an electro-thermostat. We used titrimetric analysis in analytical chemistry and physicochemical phase diagram techniques to test the developed system. In the ternary water-salt system studied (% mass), an invariant point having a composition of NaBr – 46.27%, Ba (H₂PO₂)₂ – 5.75%, H₂O – 47.98% was determined. It has been seen that in the indicated invariant point, the liquid phase is equilibrated with two solid phases: Ba(H₂PO₂)₂. H₂O and NaBr. The methods for separating NaBr and Ba(H₂PO₂)₂ salts from natural salts and salt mixtures in industrial wastes can be applied and used in the processing and preparation of physicochemical principles.