Solution-Solid Phase Equilibrium in the Systems MgBr2-NR4Br-H2O at 25°C (R = Me, Et, Bu)

摘要

Solubility in the ternary systems MgBr2-NR4Br-H2O (R = Me, Et, Bu) at 25°C was determined by the isothermal saturation method. A comparative analysis of phase diagrams was fulfilled. The results obtained were interpreted in the context of competition between hydration and association processes in water-salt systems. The structure of double salts NMe4Br-MgBr2·6H2O and NEt4BrMgBr2·8H2O was determined, and the possibility for predicting compositions of crystallizing double salts on the basis of crystallographic characteristics of ions was analyzed.