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    How to make Potassium Nitrate/ Saltpeter at home?

    I'd like to make it (be it large or small quantity), but I don't know how could I make it with my chemicals at home. If anyone knows, you have my gratitude.

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    Potassium hydroxide/nitric acid (if you just happen to have nitric acid lying around). Otherwise you can do a double displacement reaction between Calcium Nitrate and Potassium Sulphate in water, or maybe Calcium Nitrate and Potassium Chloride in hot m/ethanol then cool and filter. Another is potassium carbonate and calcium nitrate.

    Check out the Media page (search for potassium nitrate) for more examples.
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    Ammonium nitrate/KOH works. Sort of, anyway; the yield is frankly nothing to write home about. On the other hand, if you can get both in Croatia, better than nothing.

    Quick Google handed me this, if you'd like a procedure: http://www.nakka-rocketry.net/knsyn1.html.

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    You can buy a pound bottle at big orange hardware store as stump remover for under $8 but there's much better satisfaction creating materials yourself.

    Copied from nurdrage YouTube

    How to make potassium nitrate at home with instant cold packs and "sodium-free" salt.


    "Sodium-free" salt is actually potassium chloride. Instant cold packs contain ammonium nitrate and if the two are mixed potassium nitrate and ammonium chloride are formed in equilibrium. Fortunately potassium nitrate has lower solubility than ammonium chloride at colder temperatures giving us a means of separation.


    Just mix 40 grams of ammonium nitrate with 100mL of water and stir until dissolved. Filter the mixture directly into 37 grams of potassium chloride. Gently heat until completely dissolved, do not boil. Cool the mixture to 0 Celsius in the freezer or on an ice bath. Filter the crystals and dry them. Now you have potassium nitrate.


    To test it mix 2 parts potassium nitrate with one part sugar and light it up. It should burn with a purple/pinkish flame.

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    LiquidIce - The video you mention can be viewed in the DP Media Library: http://www.digitalprecursor.org/vbtu...itrate-at-Home
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    Thank you Alexires, I read the thread where you were going to upload those videos here but being new I did not know where.

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    I'm familiar with Nurdrage, but I don't have access to potassium chloride, that's the main problem. That's exactly why I started this thread. Only if I knew a simple, home/amateur way of making potassium chloride...

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    Potassium chloride is available at any super market where I'm from as diet salt and sodium free water softener salt but if that's not possible, you have to have some other potassium compound. KCL is naturally occurring in the earth. I think i can safely assume you dont have potassium metal to start from, your pretty stuck. Depending on your intended use for the saltpeter, sometimes sodium nitrate can be a suitable substitution. Again for that, the media section here can guide you to making that.

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    Yeah, it looks like I'm pretty stuck on this one, I think that NaCl just won't cut it.

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    Do you have access to any potassium compounds at all? For instance KOH, K2SO4, K2CO3, etc.?
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