Bonny Posted March 10, 2009 Posted March 10, 2009 I've made BaNO3 using the carbonate and HNO3 several times. I add add carbonate until the reaction stops, then wait maybe 1/2hr and then add more carbonate to ensure the reaction is complete. I haven't tried it , but I think you can use some hydrogen peroxide to help finish the reaction too. I usually end up with a sludge in the bottom of my container which is mostly the excess carbonate (I add quite a bit to be sure), but also undissolved nitrate (BaNO3 has a low solubility). I then decant the water off the top (with a turkey baster) and filter it into my boiling vessel. Unless you are doing only a small amount in a lot of water, you will need to add more water several times to the reaction vessel to get all the nitrate out.Once I have collected and dried the crystals, I mill them and dry them again to get as much moisture out as possible. The only smell I've had in the crystals is H2S likely from impurities in the pottery grade carbonate. The smell went away after milling and drying.
WarezWally Posted March 10, 2009 Author Posted March 10, 2009 Do you test it for residual acid content?
Bonny Posted March 10, 2009 Posted March 10, 2009 Do you test it for residual acid content? I only use blue litmus paper as a test. This may somewhat work,but the solution should be basic from the excess carbonate anyway. Barium nitrate itself can be acidic see here:http://www.hummelcroton.com/data/bano3_d.html So a proper test would need better equipment than I have.
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