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Chemical name: | Ammonium Polyphosphate |
Synonyms: | APP |
CAS No. : | 68333-79-9 |
Formula: | (NH4PO3)n |
CHARACTERISTICS:
APP with high polymerization has low solubility in water, it can be applied to the products with high humidity/water.
It contain high phosphorus,also it has high chemical stability.
It can be used in solvent/water based intumescent coatings. And is used as flame retardant in flexible and rigid urethane foams,unsaturated polyesters,epoxies,acrylics and polyurethanes.
SPECIFICATION:
Appearance | White free-flowing powder |
pH value of 10% suspension, 25 ℃ | 5.5 - 7.0 |
Acid number, mgKOH/g | ≤ 1.0 |
Solubility in Water@25 ℃, g/100ml | ≤ 0.5 |
Nitrogen % | 14.0-15.0 |
Phosphorus (as P) % | 31.0-32.0 |
Density g/cm3 | approx. 1.9 |
Bulk density g/cm3 | approx. 0.7 |
Viscosity of 10% suspension @25 ℃,mPa.s | ≤ 100 |
Degree of polymerization | > 1000 |
Average Particle Size (D50) µm | approx. 15 |
Marks:Meantime we also provide many types APP with different specifcations.
PACKING & STORAGE:
Packed in 25 kg net bags or big bags
Store in ventilated, dry place, avoid direct sunlight.


We often follow the tenet of customer-oriented, details-focused for Flame Retardant Ammonium Polyphosphate Ecoflame APP201. Our company has been continuously strengthened in the process of gaining new opportunities in the crisis and opening up new prospects in the changing environment. We have gained customer confidence with first-class products, high-quality services and very competitive prices, as well as a strong production capacity and fast delivery.