same water
Water that doesn't freeze under certain conditions is sometimes called 'unfreezable water' by various workers in the fields of cryobiology, anhydrobiology, food science and elsewhere. Here we give a brief explanation of the phenomenon in terms of the effects that slow or prevent freezing under various experimental conditions.
Some of the material in this short, informal essay is from the scientific paper "What is 'unfreezable water', how unfreezable is it and how much is there?" (Wolfe et al, 2002). Below we give references to this and other more formal and quantitative explanations in scientific journals. We also give very brief answers to two FAQs that have been raised by this page:
Which solutes are best at preventing freezing?, and
Which solutes are best at preserving ultrstructure? and
Conclusions and references.