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Solidification of CaCO3 and CaHPO4

  1. Jun 25, 2017 #1
    Hey all,

    I Have a powder of CaCO3 which I want to solidify (Hope that the right term)
    I don't expect it to be like a lime stone but rather like a cracker that I can hold.

    So I tried mixing it with H2O (distilled) and oven-dry it (60c 24h) and I do get a cracker,
    The thing is I'm not sure whether it's still only CaCO3 or maybe some reaction have changed it (or part of it).
    I followed the previous discussion in PF of CaCO3 reaction with water (https://www.physicsforums.com/threads/reactions-of-calcium-carbonate.420445/) but I can't get what happen when you dry the whole thing and take the water out (does the HCO3 condense back to CO3 and connects with the calcium?)

    Further more - I want to do the same with but add also CaHPO4 (1/20 the amount of CaCO3).
    So if I'll mix them, add water and then dry it, will I get the same materials or any reaction is expected to happen?

    Thanks a lot
    Moshe
     
  2. jcsd
  3. Jun 30, 2017 #2
    Thanks for the thread! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post? The more details the better.
     
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