Q&A for How to Make a Liquid Nitrogen Substitute

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Where can I get 99% pure isopropyl alcohol?

Community Answer

Your local pharmacy. If they don't carry any for whatever reason, you can use 91% or 70% alcohol, but it won't be as efficient.

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How do I make dry ice?

Community Answer

Get a tank of carbon-dioxide (CO2) and a burlap sack. Turn the tank upside down and cover the valve with the sack. As you open the valve, the CO2 will collect on the sack surface, forming dry ice.

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Can I remove a mole with this?

Community Answer

You should never try to remove a mole using something like this. You could injure yourself. Instead, see a doctor or use one of the safer at-home methods for mole removal. There are some articles on wikiHow that can help you, like How to Remove Moles Without Surgery .

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How exactly could I make liquid nitrogen with an air compressor, like those used for powering pneumatic tools?

Community Answer

To do this, you would first have to filter out the water and carbon dioxide in the air, because it would cause the system to be clogged with solid ice and dry ice. You could next put it through a special kind of low temperature condenser if you don't care about liquid oxygen and argon being mixed in with it. If you want more details, I have seen videos on YouTube showing details on how it is done, but it would likely take thousands of dollars worth of equipment.

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Can I use it in a spray bottle? Will it harm glass if I spray it?

Community Answer

When a liquid is sprayed, is forms tiny droplets. These tiny droplets will quickly evaporate because they have a high surface area and a low volume. If some of it survives and touches glass, it will likely evaporate on contact.

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What if the liquid spills onto a heated plate or metal sheet?

Community Answer

Liquid nitrogen evaporates in room temperature, therefore it will just evaporate quicker on a heated plate.

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What if the substitute spills on a hot metal sheet?

Community Answer

Liquid nitrogen evaporates at room temperature, therefore it will just evaporate quicker on a heated plate.

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Which one is colder--liquid nitrogen or liquid alcohol?

Community Answer

Liquid nitrogen is colder than liquid alcohol. Liquid alcohol is about -110 F, while liquid nitrogen is about -320 F.

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