[jt314]

Hi

I'm an Engineering Student and I need some Chemistry Help.

I know it’s possible to have chemical ice packs that when activated will become very cold but then once they are used up they are finished with.

What i want to know if it’s possible to 'recharge' the ice pack, like a battery, so that it can be activated again. Please note that for my particular situation it would not be possible to freeze the ice packs again.

Is there some way of separating the chemicals by electrolysis?

If not are there other ways to 'recharge' them

Cheers

[eugenedakin]

Hi jt314,

Each country has different specifications and limits as to the products used for food processing.

Which products are you able to use in the country you are currently residing?

Sincerely,

Eugene

[jt314]

The country is India and its for a small farming comunity.

[408]

Instant cold packs often contain ammonium nitrate.  If the country of manufacture has jumped on the paranoia bandwagon they might contain urea instead.  In either case, opening the instant cold pack, and drying the solution to a powder, will produce the original material, that when dissolved again, will produce the same cooling effect.