The use of melts in various fi elds of industry and scientifi c research is based on the study of the properties of melts and the chemical processes occurring in them. In modern engineering and technology, a signifi cant number of processes are associated with the use of mixtures of lithium and sodium halides as mixtures that accumulate heat, as electrolytes for medium-temperature chemical current sources. Therefore, the interest in the study of systems involving such systems is continuously increasing.
