Collect. Czech. Chem. Commun. 1989, 54, 2711-2714

The supercooling ability of calcium nitrate solutions in ethylene glycol

Ivo Sláma and Jarmila Malá

Institute of Inorganic Chemistry, Czechoslovak Academy of Sciences, 160 00 Prague 6


The dependence of the induction period of crystallization on the supercooling was determined for the Ca(NO3)2-ethylene glycol system at mole fractions of the former from 0 to 0.049, and treated in terms of the TTT (Time-Temperature-Transformation) diagram. Addition of Ca(NO3)2 to ethylene glycol brings about a substantial increase in the critical induction period of crystallization. The thermal stability of glasses is discussed in terms of the shape and position of the TTT curves.