Purification of KNO3 using Recrystallization

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Uploaded by on Nov 15, 2010

In this video, I demonstrate the purification of potassium nitrate using recrystallization.

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Science & Technology

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Standard YouTube License

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Uploader Comments (zhmapper)

  • i did this and it worked thnx alot, but what could u do with the crystals?

  • @coolhand2323mods I'm in the process of making videos about that. :)

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All Comments (20)

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  • That is kind of funny that the container is marked in fluid ounces to sell a solid product...

    Then again, honey (a liquid) is sold by weight... so who knows...

    Maybe someone's just trying to see if we're paying attention.

  • @luftwaffe1111 That's Dihydrogen Monoxide!! Dangerous stuff. :)

  • @zhmapper Make nitric acid and maybe gun powder or whatever else you want

  • Does this has to be done in glass container ? Can't I just use something different like a pot soup (made of aluminium)?

  • nice

  • this is purifying kno3 this is just how to extract it from stump remover

  • @cosmin0192837465 The steam is just water evaporating and unless you can cite your sources for the carcinogenic vapor, it's simply harmless gaseous water.

  • Great video! When I perform procedures like this, I typically vacuum filter the hot solution. This removes suspended particles and other solid impurities. I've seen a brownish murky solution of nitrate fertilizer go to nearly clear after just to passes. And of course you can always perform multiple crystallizations if you need a really pure product.

  • Rather then wait for it to dry overnight, couldn't you heat it on the out plate to drive out the water?

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