Solubility of Components in Magnesium Chlorate–Ureamonoethanolammonium Acetate–Water System

In the magnesium chlorate–ureamonoethanolammonium acetate–water system, the binary system consisting of Mg(ClO3)2–H2O was initially studied from –52.0°C to the melting point of the initial components, and a diagram of the binary system was drawn. All eutectic points were identified in the constructed diagram. In order to fully describe the system, the binary system of the first and second substances was first studied. It was found that the eutectic point of the binary system consisting of C3H8O3N2∙NH2C2H4OH–H2O corresponds to the temperature of –31.0°C when there are 54.4% monoethanolammonium acetate urea and 45.6% water. Based on the binary systems of studied starting materials and six internal sections, the phase polythermal solubility diagram of the Mg(ClO3)2–C3H8O3N2∙NH2C2H4OH–H2O system was constructed. The polythermal solubility diagram was studied at the temperature from –52.0 to –3.0°C and the wide concentration range based on binary systems of the starting substances and six internal sections. The crystallization field boundaries of ice, C3H8O3N2∙NH2C2H4OH, Mg(ClO3)2∙6H2O, Mg(ClO3)2∙12H2O, and Mg(ClO3)2∙16H2O were determined in the diagram. The studied system belongs to the complex eutonic type, the starting substances retain their properties in solution and no new compounds are formed.