I am interested in model rocketry, and need to produce small quantities of pottasium nitrate. For this process I need ammonium nitrate, but I only have calcium ammonium nitrate. Is there a simple process for removing the calcium?

  • $\begingroup$ decompose it at 210 C $\endgroup$ Commented Jan 21, 2017 at 14:34
  • $\begingroup$ You mean by electrolysis? $\endgroup$
    – Emmett P
    Commented Jan 21, 2017 at 14:44
  • $\begingroup$ No I meant by heating. $\endgroup$ Commented Jan 21, 2017 at 15:08
  • 4
    $\begingroup$ If you add ammonium sulfate then the calcium will precipitate out and not waste as much of your nitrate content. $\endgroup$
    – A.K.
    Commented Aug 4, 2018 at 18:53
  • 2
    $\begingroup$ Why not just get potassium nitrate ? $\endgroup$
    – Poutnik
    Commented May 1, 2019 at 8:04

1 Answer 1


Soak it in water and decant off the aqueous solution freeze and the crystals should form its just calcium carbonate and ammonium nitrate dont recommend using heat.


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