Description of Nitrogen Fertilizer Urea N46% 46-0-0 CAS:57-13-6 urea is a small diameter, spherical white solid. It is an organic amide molecule containing 46% nitrogen in the form of amine groups. UREA is infinitely soluble in water and is suitable for use as an agricultural and forestry fertilizer as well as for industrial applications which require a high quality nitrogen source. It is not a poison to mammals and birds and is a benign and safe chemical to handle. Appearance White, Free Flowing, Free from Harmful Substances and Foreign Matters. Boiling Point 131-135 C Melting Point 1080G/L(20 C) Refractive index n20/D 1.40 Flash point 72.7 C Flash point InChI=1/CH4N2O/c2-1(3)4/h(H4,2,3,4) Water soluble 1080 g/L (20 C)