The knowledge of the phase diagram of the molten salts is of primary importancefor investigating their physicochemical properties and for electrolytic preparation ofthe corresponding metals. Up to now,however, the phase diagram of the ternary sys-tem LaCl_3-BaCl_2-LiCl has not been reported in literature. Therefore, for practical pur- Up to now, however, the phase diagram of the ternary sys-tem LaCl_3-BaCl_2-LiCl has not been reported in literature. Therefore, for practical pur-