Urea is a nitrogenous compound that contains a carbonyl group attached to two amine groups. Urea is produced from the reaction of ammonia and carbon dioxide in solid form. This solid substance is soluble in water and is neither acidic nor alkaline. Urea is also known as carbamide. Urea is used as a source of nitrogen in fertilizers and is an important raw material for agricultural industries. Iran is one of the largest exporters of urea in the world. Urea is available in the market in two forms: prill or granule. The technical specifications of urea are given in the following table:


Property Test Method Value
Total Nitrogen Content ISO 5315 Min 46 wt%
Biuret BS EN 15479 Max 1 wt%
Free Ammonia Laboratory manual Max 100 mg/kg
Formaldehyde HFT 00022 Max 0.55 wt%
Particle Size Distribution ISO 8397 2-4 mm: Min 90 wt%, Dust less than 0.55 mm: Max 0.2 wt%
Water DSM 0281-B2-E Max 0.5 wt%


It is supplied in bulk or 50 kg bags.


  • As a raw material for the production of urea-formaldehyde and urea-melamine-formaldehyde resins
  • Fertilizer
  • As stabilizer of nitrocellulose explosives
  • One of the components of animal feed
  • A main ingredient in the formulation of hair removal compounds
  • An ingredient in some skin creams, moisturizers, hair conditioners
  • A flame retardant
  • Yeast nutrient for fermentation of sugars to ethanol
  • Nutrient used by plankton
  • As an optical parametric oscillator in nonlinear optics

Other Names

  • Carbamide
  • Carbonyl diamide
  • Carbonyl diamine

Chemical Formula

  •  CO(NH 22

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