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Ammonium Polyphosphate (APP)

Ammonium Polyphosphate (APP) is a versatile phosphorus-based compound widely used in liquid fertilizers, fire-retardant systems, and specialty industrial formulations.

CAS # 68333-79-9

Ammonium Polyphosphate (APP) is a highly effective phosphorus-based compound valued for its excellent solubility, controlled nutrient release, and multifunctional performance. Widely used in liquid fertilizers, fire-retardant systems, and specialty industrial applications, APP delivers consistent quality and reliable results. Its ability to provide both nitrogen and phosphorus in a stable, easy-to-handle form makes it a preferred choice for manufacturers, formulators, and agricultural producers seeking efficiency and performance.

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General Properties


  • Chemical Type: Condensed ammonium phosphate

  • Appearance: Clear to slightly hazy liquid or white solid

  • Solubility: Highly soluble in water

 

Applications


  • Agricultural Fertilizers

    • A primary phosphorus source in liquid fertilizers and fertigation systems. APP improves nutrient availability, supports strong root development, and enhances overall crop performance in row crops, orchards, and specialty agriculture.

  • Fire Retardants & Flame-Resistant Materials

    • Used in intumescent coatings, plastics, textiles, and building materials to improve fire resistance by promoting char formation and reducing flame spread.

  • Industrial & Specialty Chemical Formulations

    • Functions as a buffering agent, dispersant, and phosphorus source in a variety of industrial processes and specialty chemical products.

  • Water Treatment & Scale Control

    • Applied in select water-treatment formulations to sequester metal ions and control scale formation in industrial systems.

 

Advantages

  • Efficient Nutrient Delivery: Provides both nitrogen and phosphorus in a readily available form, supporting balanced plant nutrition and improved fertilizer efficiency.

  • Excellent Solubility & Compatibility: Liquid grades blend easily with other fertilizers and micronutrients, simplifying formulation and application.

  • Multi-Industry Versatility: Suitable for agriculture, fire protection, water treatment, and specialty manufacturing—reducing the need for multiple products.

  • Improved Performance & Stability: Offers controlled phosphorus release and strong chemical stability, minimizing losses and enhancing effectiveness.

  • Consistent, High-Quality Production: Manufactured to strict quality standards, ensuring reliable performance batch after batch.

 

Safety & Handling Overview


Ammonium Polyphosphate is generally considered low to moderate hazard when handled properly but requires standard industrial precautions.


  • May cause mild irritation to eyes or skin with direct contact.

  • Avoid inhalation of aerosols or dust (solid grades).

  • Non-flammable under normal conditions.

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