Urea, sometimes called carbamide, is a solid organic crystalline compound that is colorless, odorless and highly water soluble. It is formed naturally in mammals, and serves an important role in the liver as the main nitrogen-containing product that breaks down amino acids, proteins and ammonia into waste. The kidneys scrub the urea from the blood and deposit it into the urinary tract, and it then makes up the chief solid material dissolved in urine. Urea can also be synthesized inexpensively from abundantly available inorganic materials. Because urea offers wide-ranging uses in many different industries, it is produced regularly and is available in large quantities for use throughout the world.
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