Specifications for prilled urea 46%N: Nitrogen: 46% min. Moisture: 0.3% max. Biuret: 1% Granulation: 1 - 4 mm 90-94 % Melting Point: 132 Degrees Celsius Colour: Pure White Prilled Radiation: Non Radioactive Free Ammonia: 160pxt ppm Prilled,Free Flowing, ...