Solubility Study for the Components of Aqueous System Containing Ammonium Chloroethylphosphonates, Ammonium Dihydrogen Phosphate, Ammonium Sulfate, and Sodium Tricarbamidochlorate with the Aim to Develop Multipurpose Defoliant

Solubility diagram for complex aqueous system containing ammonium chloroethylphosphonates, ammonium phosphate, ammonium sulfate, and sodium tricarbamide chlorate has been studied by visual polythermal method in the temperature range from –21 to +52°C. Polythermal phase diagram with demarcated fields for ice and components crystallization has been plotted. Formation of new compound, ammonium chloroethylphosphonate monochlorate NH4ClO3∙ClCH2CH2HPO3NH4, has been established; its composition was confirmed by chemical and physicochemical analysis. Viscosity, density (at 25°C), and crystallization temperature for a number of mixtures in [65%NaClO3∙3CO(NH2)2 + 5%(NH4)2SO4 + 30%H2O]–[21%ClCH2CH2PO(OH)2∙NH3 + 11%ClCH2CH2PO(OH)2∙2NH3 + 12%NH4H2PO4 + 56%H2O] system have been studied.

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