The Nobles of Global Trade
Urea has the highest nitrogen content of all solid nitrogenous fertilizers in common use. Therefore, it has the lowest transportation costs per unit of nitrogen nutrient. More than 90% of world industrial production of urea is destined for use as a nitrogen-release fertilizer. It is an organic compound produced by the reaction of ammonia and Carbon Dioxide at high pressure to produce an intermediate compound called Ammonium Carbamate which decomposes to produce Urea in liquid form.
Specification for Granulated Urea
Minimum Weight 46.2%
Total nitrogen
Minimum Weight 0.3%
Humidity
Minimum Weight 1%
Biuret
Minimum Weight 0.35 - 0.55%
Formaldehyde
Minimum Weight 50 ppm
Free Ammonia
Minimum 3 kg for granule with a diameter of 3.15 mm
Resistance to fragmentation
Maximum 50 m 5
Temperature
760 to 800 kg / m3
Density
2-4 mm Minimum 90%
Allowed production class
Weight <1 mm Max 1% weight