Physico-chemical study of the system from urea, phosphoric acid and monochloroacetate

The solubility in the system urea - [84% phosphoric acid + 16% water] - monochloroacetic acid from 14.4 ° С (complete solidification of the system) to 100 ° С was visually studied by the polythermal method, and a polythermal drawing of the system was constructed based on the polytherms of solubility and internal sections. On the polythermal solubility drawing, the crystallization fields of phosphoric acid monohydrate, urea and compounds of the following compositions are distinguished: CO(NH2)2•H3PO4; ClCH2COOH•H3PO4; CO(NH2)2•ClCH2COOH; CO(NH2)2•2ClCH2COOH.