Glycerol eutectic temperature

Moreover, it should be readily soluble. Glycerol is thus quite effective (M=92Da, eutectic temperature —46°C), but it is not acceptable in substantial concentrations in most foods. Consequently, sugars and polyols (e.g., sorbitol) are often used. 

The non equilibrium status can be seen during a slow cooling of a water-glycerine solution Starting with a 20 % glycerol solution pure ice crystals will first be formed until at -46.5 °C when the glycerol concentration has reached 66.7 %. At this temperature, the eutectic should solidify. Howevere it is possible to reduce the temperature to -58 °C with a glycerol concentration of 73 %. A further decrease of the temperature does not crystallize... 

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