Phase Equilibria in the Sodium Formate–Glycerol–Water System at Temperatures Below 0°С

Abstract Phase equilibria in sections of the sodium formate–glycerol–water system at temperatures of 0 to –47°C are studied by visual polythermal analysis. The ratio of sodium formate and glycerol in the sections is varied from 3 : 1 to 1 : 3. It is determined that the introduction of glycerol to the sodium formate–water system decreases both the eutectic temperature and the deicing ability of the formate–glycerol mixtures, while the latter remain satisfactory. Identification is made of mixtures that are promising as new deicing agents with good deicing ability and high efficiency at lower temperatures (below –16°C) in comparison with sodium formate.