Crystalline and Amorphous Phases in the Ternary System Water−Sucrose−Sodium Chloride

The glass transitions, softening points, devitrification, and melting have been determined by differential scanning calorimetry for the ternary system water−sucrose−sodium chloride over the accessible composition range. X-ray diffraction was used to identify the devitrification in freeze-dried samples. Devitrification is due to NaCl crystallization from the wholly amorphous mixtures and of sucrose or the ternary compound sucrose. NaCl·2H 2 O in the crystalline freeze-dried mixtures. The part of the solid/liquid state diagram with glass transitions and softening temperature surfaces and the line of the “maximally” freeze-concentrated solutions are represented as projections on the composition triangle.