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The effect of ammonium sulfate on structural and thermal characteristics of urea

, : The effect of ammonium sulfate on structural and thermal characteristics of urea. Soviet Chemical Industry 15(4): 462-465

Results are presented from an X-ray diffraction and thermogravimetric study of the effect of ammonium sulfate on the structure and size of seed crystals of urea and on its thermal characteristics. It was established that in the presence of ammonium sulfate there is a decrease of the crystal size of the nucleating structure of urea. The added ammonium sulfate does not change the melting point of urea or reduce the effect of overcooling in the crystallization process.


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