Super Ice!




About: I'm just a fanatical kid with some fantastic hobbies. A man in-sync with his insanity.

This project is to find a stable home-made recipe for an ice that is "colder than ice" (A.K.A Super Ice! (TM)). Ordinary ice freezes at 32 degrees Fahrenheit, whereas using this recipe, I was able to maintain a stable 8 degrees Fahrenheit. However, this is only how cold my freezer gets, and 18% of the solution remained liquid, meaning that, if you had a colder freezer, you could achieve an even lower temperature (perhaps even subzero!).

Having Super Ice is very versatile whether on your long road trips or when you are trying to find a way to cool down after that game of softball in triple digit heat. I hope you enjoy!

Step 1: What You'll Need.

-1 cup of water.

-1/4 cup of lemon juice.

-4 tablespoons of salt.

-water bottle.

-resealable sandwich bag.

Step 2: Shake It Up.

Put the lemon juice, water, and salt in the water bottle and shake it up.

The water bottle is just to make it quick and easy to stir. If you don't have access to a water bottle, you can stir, just be sure to do so thoroughly.

Step 3: Freeze It.

Pour the concoction into the resealable bag and throw it into the freezer. You can put a twist tie or rubber-band around the top to make it save shape, but it is more of a slush than a solid ice block, so it is very malleable.

Step 4: Use It.

Ice is a very versatile substance, and super ice is just as versatile but also, well, super! My favorite method is to hang it in front of the vents in your car to give it a much colder feeling. You can also flatten it and use it as a "floor" in your cooler.

I hope you enjoy it as much as I do!

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    6 Discussions


    1 year ago

    If you are not letting it freeze, you are not storing as much energy as you could. Standard ice does not stop getting cold at 32ºF but it does freeze and then keeps cooling down to your 8ºF.
    You are storing energy as heat capacity but you are not taking advantage of the latent heat of melting. Water at 25 C can hold 4.180 (kJ/(kg K)) where as ice can only hold 2.05 so you can store twice the energy in every degree C you suppress the freezing point. You would get an additional 334 kJ/kg by letting it freeze.
    My suggestion is that you add enough to the water to suppress the freezing point to 10 F to ensure that it'll freeze. If you want it malleable, there is the trade off.

    2 replies

    Reply 11 months ago

    Water freezes at sea level at 32 degrees. Water requires 2 degree temperature difference to enable a phase change. But once Water is ice at sea level it is 32 degrees. That's why it's an insulator inside an igloo is 32 degrees no less regardless of out side. Liquid water can be modified to suppress the freezing point. That liquid may be super cooled. Until it freezes. These are the unique properties of water. Steam is 212 degrees at sea level. Try sweating wet copper pipe you will never get up to the 600 degrees to sweat the pipe the steam won't let it get hotter than 212 degrees. The freezer may be 8 degrees but all the ice is 32 degrees. Always.


    Reply 1 year ago

    so your saying add how much more water to allow it to freeze solid?


    1 year ago

    A non-toxic super ice: Water, Ethyl Alcohol and Glycerin.

    Or for quick cold on the go make up sealed bags of one part DRY Ammonium Nitrate and one part DRY Urea. Just add (local) water for instant cold.