Abstract: | The equilibrium studies of the KNO3‐NH4NO3‐H2O system at 298 K have been conducted. The isotherm of solubility and the curve of distribution have been mathematically described. The parameters of the crystal lattice and the enthalpy of crystallization of the Kx(NH4)1‐x]NO3 solid solutions as a function of their composition have been presented. The structure of salts KNO3�xNH4NO3 with different x values have been solved and refined. |