Polytherm of the CO(NH2)2–KNO3–H2O phase diagram

The crystallization polytherm of the ternary CO(NH2)2–KNO3–H2O system is plotted for the first time via visual polythermal analysis and calculating ternary eutonics characteristics from data on the boundary elements of two-component systems. The ternary eutonics modeling error does not exceed 3.5%. In addition to the crystallization fields of individual components, the field of the redox reaction that occurs in the system between potassium nitrate and carbamide is shown in the CO(NH2)2–KNO3–H2O diagram by a dashed outline.

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