System Researches “Fluorides of Alkaline Metals – Hydrogen Fluoride”

The formation processes of sodium polyhydrofluorides at form NaF·nHF, where n = 2, 3, 4, are researched depending on pressure of hydrogen fluoride and temperature. The experiments prove the presence of molecular fluorine in gas inhibits the process of formation of the sodium hydrofluorides containing more than two molecules of HF. We offered an empirical formula to calculate the estimate of decomposition temperature for alkaline metals hydrofluorides. Settlement decomposition temperature of NaF·4HF, is confirmed experimentally.