August 4, 2005
Simple enough, the compound is a fairly insoluble solid. So, take a stoichometric amount of urea with a stoichiometric amount of oxalic acid (both in solution) and mix them together and you get what I show above (actually excess urea was added). Notice that the precipitate formed so fast that only a small amount of water is visible when the graduated cylinder is tilted. Now what do with with urea oxalate? Maybe try to heat it and get a condensation reaction between the urea and oxalic acid to get a new cyclic compound, something I was also attempting by fusing the two solids together. In that instance I ended up with a yellow solid when I digested it in water and filtered, if I got my intended product I don't know.