Urea

 

Chemical Name and Formula:

  • Name: Urea (Carbamide)
  • Formula: (NH₂)₂CO
  • Appearance: White solid, available as prilled or granular form

Physical and Chemical Properties:

  • Highly soluble in water
  • Odorless or with a very faint ammonia smell
  • Non‑toxic in pure form (although dust may irritate the respiratory system)

Industrial Production Process:

  • Urea is synthesized from the reaction of ammonia (NH₃) and carbon dioxide (CO₂) under high temperature and pressure in petrochemical plants.
  • Feedstock for this process is typically supplied from ammonia production units.

Applications in Iran (2024):

  • Fertilizer: The largest use, due to its high nitrogen content (~46% nitrogen by weight)
  • Industrial Feedstock: For manufacturing urea–formaldehyde resins, melamine, and industrial adhesives
  • Special Applications: As an anti‑icing agent in Urea‑DEF solutions for reducing NOₓ emissions in diesel engine exhausts

Common Standards:

  • Purity above 99%
  • Biuret content below 1% for agricultural grade
  • Moisture content < 0.5%

Market and Trade:

  • Iran is one of the largest urea producers in the region, with significant exports to Asian, African, and South American countries.
  • Price is influenced by the global fertilizer market and the cost of natural gas as feedstock.

Safety and Storage:

  • Store away from moisture to prevent caking
  • Dust should be controlled
  • Skin contact is harmless, but ingestion of large amounts is hazardous

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