Phase equilibria in the sodium formate–potassium formate–water system below 0°c and the anti-icing properties of salt compositions

Phase equilibria in the sodium formate—potassium formate—water system below 0°C along the NaHCOO : KHCOO = 5 : 1, 4 : 1, 3 : 1, 2 : 1, and 1 : 1 w/w sections have been investigated, the onset temperatures of ice crystallization from the aqueous solutions have been determined, and ice melting polytherms have been constructed for each section. The ice-melting capacity of the formate mixtures at —5 to —10°C has been calculated.