Ammonium Polyphosphate phase II with silane treatment is a non-halogen flame retardant based on phosphorus/nitrogen synergism. It is treated/coated by silane via a specialized method. It is different from APP-II (APP-201) by the following:
It can be used for all applications that our standard APP-201 is suitable for. It can be used in plastics (PP, PVC, PE, etc.), polyester, rubber, PU foam, and expandable fireproof coatings. It has lower viscosity and lower solubility (compared to the standard grade APP-201) in water, which could make it suitable for water-fast intumescent systems in polymers (such as PU, PBT, etc.) and paints.
25 kg woven bag with plastic liner; 500/1000 kg super sacks.
Target Value Typical Value
Appearance White powder White powder
P Content % (w/w) ≥ 30 31
N Content % (w/w) 14 – 16 15
Viscosity (10% aqueous, 25 C) mPa.s ≤ 20 10
pH value (10% aqueous) 6 – 8 7
Average Particle Size (D50) um 18 - 22 20
Particle Size <50 um % (w/w) ≥ 95 98
>100 um % (w/w) ≤ 0.1 0
Moisture Content % (w/w) ≤ 0.25 0.10
Solubility in Water (g/100ml, 25C) ≤ 0.3 0.15