Can anyone suggest how to make crystalline N-ethylurea?

12 May 2015 0 10K Report

I am preparing N-ethylurea by reacting ethylamine and urea/sodium cyanate in aq./non polar solvent and concentration to isolate crystalline N-ethylurea, but I am not able to isolate in crystals form found in syrup/semi solid form, can anybody suggest how I can isolate crystalline N-ethylurea. Or any other simple method to make crystalline N-ethylurea?

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