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The Chemical In Gel Ice Pack Bag: Sodium Polyacrylate

Nov 1st,2022

Gel ice pack


Gel ice pack also called cold pack, is the substitute product for the traditional ice bag.

It can be used to:

lower the body’s temperature;

transport the medicine, food, flower;

deal with the emergency hurt pain on sports injuries.



Different from traditional ice bags, gel ice packs have become increasingly popular.

Advantages of Gel Ice Pack

  • Soft feel and nice appearance;

  • Effectively curb the breeding of bacteria;

  • More effective. (Its specific heat is 3-4 times than ice's)

 


 

What chemical is in ice packs?

It’s Sodium polyacrylate.



As a type of superabsorbent polymers, sodium polyacrylate can absorb plenty of water and become a gel form.

One-gram sodium polyacrylate can absorb 300-1000 grams of pure water. In other words, it’s enough to contain 1 gram (or less)  sodium polyacrylate for each gel ice pack.

Advantages of Sodium polyacrylate

  • high specific heat capacity;

  • low cost (for each gel ice pack) ;

  • non-toxic & environment friendly;

 


 

Other applications of sodium polyacrylate


Except for gel ice pack,  it can be used in every aspect of our life:

  • thermal insulation material (ice towels, ice pillows…);

  • absorbent material (such as in paper diapers, sanitary napkins, nursing pads…);

  • water blocking material (such as inflatable sandbags, waterproof for cable…);

  • expanding material (inflatable toy).


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