Specification of Ammonium Polyphosphate-APP   

CAS No. 

68333-79-9

EINECS No

269-789-9

Formula 

(NH4PO3)n

Appearance

White, free flowing powder

 Specification :

Phosphorus (w/w)

31.0 – 32.0 %

 Nitrogen (w/w)

14.0 – 15.0 %

Water Content

≤0.25 %

 Solubility in water

 ≤0.50 % (10% suspension)

 Viscosity  (mpas)

≤100 (25ºC, 10% suspension)

 pH Value 

5.5 – 7.5

 Acid Number (mg KOH/g)

≤1.0

 Average Particle Size (µm)

15

Particle Size

≤ 45 µm (m/m)        ≥ 96.0 %
 > 100 µm (m/m)      ≤ 0.2 %

 Weight Loss

At 350ºC (w/w)

<  5.0 %

At 450ºC (w/w)

<10.0 %

 At 550ºC (w/w)

<20.0 %