The Glacial Heat contains a supersaturated and supercooled salt solution. The freezing point of the solution is 130 degrees F and can be stored at room temperature as a liquid.
A metal disc inside the 3 X 6 pack can be squeezed to initiate the reaction. The solution freezes, hardens and releases heat. Great visual demonstration of an exothermic reaction as the solution turns white when it freezes. Can be boiled and reused numerous times.
Excellent for use as a hand warmer or reusable heating pad for sore muscles.
Common names for this product are:
- Hot Ice
- Sodium Acetate
- Heat Solution
- Heat Pad
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Video Instructions for Use and Reuse
For more instructions, check out How to Activate and Reuse Glacial Heat at Gadget Science.
You can also use glacial heat for teaching supersaturated and supercooled solutions.