It is colorless or white ordorless little flakes or crystalline powder. It has hygroscopicity. Relative density is 1.335. 1,Chemical Name: UREA2,Molecular Formula : CH4N2O3,Molecular Weight: 60.064,CAS: 57-13-65,Character: It is colorless or white ordorless little flakes or crystalline powder. It has hygroscopicity. Relative density is 1.335. Melting point is 132.7°C(decompose). It’s soluble in ...