Study of the solubility of components in an aqueous system of chloroethylphosphonates, dihydrophosphate, ammonium sulfate and sodium tricarbamide chlorate in order to develop a complex-acting defoliant

The solubility in the context of a complex aqueous system consisting of chloroethylphosphonates, phosphate, ammonium sulfate and sodium tricarbamide chlorate in the range of -21— +52°C was studied by a visual-polythermal method. A polythermal phase diagram has been constructed, on which the crystallization fields of ice and system components are delimited. The formation of a new compound of ammonium chloroethylphosphonate monochlorate NH4ClO3 ∙ ClCH2CH2HPO3NH4 was established, the composition of which was confirmed by the methods of chemical and physicochemical analysis. The viscosity, density (at 25°C) and crystallization temperature of a number of mixtures in the context of the system [65%NaClO3∙3CO(NH2)2+5%(NH4)2SO4+30%H2O]-[21%ClCH2CH2PO(OH)2∙NH3+11%ClCH2CH2PO(OH)2∙2NH3+12%NH4H2PO4+56%H2O].

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