What is Ammonium Phosphate

The largest use by weight is in agriculture, as an ingredient of fertilisers. It is also used as in dry chemical extinguishers, and very widely in the field of optics due to its crystalline properties.

  • Synonyms: Ammonium Phosphate Monobasic, Ammonium Dihydrogenphosphate, Mono-Ammonium Phosphate, Prim-Ammonium Phosphate
  • INCI: Ammonium Phosphate
  • Chemical Formula: H₁₂N₃O₄P
  • CAS Number: 7722-76-1

Product Specifications

Chemical Formula H₁₂N₃O₄P
CAS Number 7722-76-1
Molar Weight 115.03 g/mol
Specific Gravity 1.803
Melting Point 190°C
Forms Dry Solution
Grades Food Technical Feed

Uses and Applications for Ammonium Phosphate

Key Applications

  • Agricultural chemicals (non-pesticide)
  • Building / construction metals - wood and engineered wood products
  • Fire retardant
  • Textile
  • Forest Fire Suppression
  • Lawn and Garden Care Products
  • Paper Products


  • Coatings & Construction
  • Agriculture

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