25 Feb Aqueous solution of propylene glycol – aqueous solution of coolant and antifreeze for heating and cooling systems Dependence of propylene glycol concentration on the freezing point of aqueous solution (onset of crystallization). Solution density values at 20 ° C. Propylene Glycol Solution % Freezing point (onset of crystallization), t°C Density 20°C 31% -15°C 1,023 35% -20°C 1,028 41% -25°C 1,032 45% -30°C 1,035 50% -35°C 1,038 55% -45°C 1,040 60% -55°C 1,042 65% -57°C 1,043 70% -58°C 1,044 paveldev Information
