PHASE BALANCE IN THREEFOLD SYSTEMS CO(NH2)2 – (NH4)2HPO4 – H2O, CO(NH2)2 – (NH4)2SO4 – H2O, CO(NH2)2 – NH4CL – H2O AT 25°C
Optimized method of sections investigated phase equilibria at 25°C in ternary water-salt systems containing urea and ammonium salts of the following: sulfate, phosphate and chloride. The system CO(NH2)2 - (NH4)2SO4 - H2O at 25°C has a simple evtonic type studies established the compositions of phases involved in the nonvariant equilibria, studied lines of univariant equilibria. The system CO(NH2)2 - (NH4)2HPO4 - H2O at 25°C has a simple evtonic type studies established the compositions of phases involved in the nonvariant equilibria, studied lines of univariant equilibria. In the system CO(NH2)2 - NH4Cl - H2O at 25°C is formed incongruently soluble compound of NH4Cl·CO (NH2)2, the studies established the compositions of phases involved in the nonvariant equilibria peritonicheskom and evtonic, studied lines of univariant equilibria. The data obtained can be used as reference or to select the optimum compositions of liquid fertilizer.