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Author: Subject: How fast does urea hydrolize in solution with excess Ca(OH)2?
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[*] posted on 9-7-2013 at 16:26
How fast does urea hydrolize in solution with excess Ca(OH)2?

I have fertilizer that contains K, NH4, PO4 and urea.

Now as I already know the method, potassium nitrate can be made from any potassium salt and NH4NO3 during cooling as the solubility is greatly different.

But now I would like to cool the solution after addition of excess Ca(OH)2, but I don't want urea to interfere. How fast does urea hydrolize in alkaline Ca(OH)2 conditions? Calcium phosphate should also precipitate.

[Edited on 10-7-2013 by Random]
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