Specification of Ammonium Polyphosphate, Melamine Coated
CAS No. : 68333-79-9
EINECS No. : 269-789-9
Formula : (NH4PO3)n
Appearance : White, free flowing powder
Specification :
Phosphorus (w/w) : 28.0 – 30.0 %
Nitrogen (w/w) : 18.0 – 20.0 %
Water Content : ≤0.25 %
Solubility in water : ≤0.50 %
(10% suspension)
Viscosity (mpas) : ≤20
(25ºC, 10% suspension)
pH Value : 6.5 – 8.5
Acid Number (mg KOH/g) : ≤1.0
Average Particle Size (µm) : 15
Particle Size : > 45 µm (m/m %) £ 1.0 %
> 74 µm (m/m %) ≤ 0.2 %
Weight Loss :
At 350ºC (w/w) : < 8.0 – 10.0 %
At 450ºC (w/w) : <18.0 – 20.0 %
At 550ºC (w/w) : <28.0 – 30.0 %
