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Topic: Random Question  (Read 3522 times)

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Offline havoc928

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Random Question
« on: August 25, 2009, 11:05:56 PM »
Are there any two chemicals that are safe and when are mixed together get cold rather quickly?
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Offline nj_bartel

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Re: Random Question
« Reply #1 on: August 26, 2009, 12:01:20 AM »
Safe how?
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Offline Sam (NG)

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Re: Random Question
« Reply #2 on: August 26, 2009, 02:21:38 AM »
Acetic acid and sodium bicarbonate is endothermic.  Depends how cold you want to go.
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Offline Arctic-Nation

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Re: Random Question
« Reply #3 on: August 26, 2009, 04:03:40 AM »
Crushed ice and sodium chloride. You can hardly get safer than that.
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Offline Sam (NG)

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Re: Random Question
« Reply #4 on: August 26, 2009, 05:33:14 AM »
Quote from: Arctic-Nation on August 26, 2009, 04:03:40 AM
Crushed ice and sodium chloride. You can hardly get safer than that.

Depends, the chemicals themselves are harmless, but you're going to have a slurry at ~10 °C which could be considered a hazard for cold burns.

If you just use household vinegar and sodium bicarbonate, the risk with that reaction is minimal, I wasn't suggesting the use of glacial acetic acid or anything.
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