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Glacial Heat

Commonly called Hot Ice, this is supersaturated solution that freezes when activated.
Manufacturer: Heath Scientific


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.

Other Names

Common names for this product are:

  • Hot Ice
  • Sodium Acetate
  • Heat Solution
  • Heat Pad

Common misspellings:
glaical haet soduim hto gleysal glasial asetat


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.

Product tags
my kids love these
I have a 2 and 3 year old, they were so thrilled when they were able to make it freeze after only a couple tries, they then ran off with the 2 I had and didn't get them back until later.
Jacob | Date: 9/18/2012 3:18 PM