This page describes a thermal pack containing a supersaturated sodium acetate solution that can heat or cool. Activating it via a metal trigger causes crystallization, releasing heat. Supersaturation ...This page describes a thermal pack containing a supersaturated sodium acetate solution that can heat or cool. Activating it via a metal trigger causes crystallization, releasing heat. Supersaturation involves solute exceeding usual capacity at a specific temperature, with crystallization initiated by a seed crystal, enabling quick solidification of the excess solute.
