The Sucrose-Water Phase Diagram

At any temperature below the freezing point, e.g. —10 °C) there is a certain amount of ice in equilibrium with concentrated sucrose solution. The amount of ice can be determined from the phase diagram. At C, the sucrose concentration is 57%. Let us suppose that we started with 1 kg of solution, i.e. 300 g sucrose and 700 g water. The sucrose 

So far, the behaviour is the same as with salt solutions. However, unlike salt, sucrose crystals do not form readily, and the solution can become supersaturated, Le. the solute concentration increases beyond the point at which it should precipitate out of solution (cf. supercooling) and the freezing point curve can be extended beyond the theoretical eutectic point, D (63% sucrose, — 13.7°C). The solution passes D and continues along the freezing point curve until it meets the 

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