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Urea
Urea:

Carbamide, Carbonyl Diamide, Carbonic Acid, Aliphatic Amide

Urea or carbamide is an organic compound with the chemical formula CO(NH2)2. The molecule has two —NH2 groups joined by a carbonyl (C=O) functional group.

Urea - chemical structure
Urea (1/3)
chemical structure CO(NH2)2
Urea - 3D Model balls
Urea (2/3)
3D Model balls
Urea - 3D Model, space ball filled
Urea (3/3)
3D Model, space ball filled

Urea serves an important role in the metabolism of nitrogen-containing compounds by animals and is the main nitrogen-containing substance in the urine of mammals. It is a colorless, odorless solid, highly soluble in water and practically non-toxic (LD50 is 15 g/kg for rat). Dissolved in water, it is neither acidic nor alkaline. The body uses it in many processes, the most notable one being nitrogen excretion. Urea is widely used in fertilizers as a convenient source of nitrogen. Urea is also an important raw material for the chemical industry.

More than 90% of world industrial production of urea is destined for use as a nitrogen-release fertilizer. 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. The standard crop-nutrient rating (NPK rating) of urea is 46-0-0.

 Urea Specs  (in Spanish; English version comming soon ...)