Ammonium polyphosphate(phase-ii) (cf-app201) Molecular formula : (nh4po3)n n>1000 Cas no.: 68333-79-9 Einecs no.: 269-789-9 Model no.: cf-app201 Ammonium polyphosphate(phase ii) is a non-halogen flame retardant. It acts as flame retardant by intumescence mechanism. When app-ii is exposed to fire or heat, it decomposes to polymeric phosphate acid and ammonia. The polyphosphoric acid reacts with hydroxyl groups to form a nonstable phosphateester. Following dehydration of the phosphateester, a carbon foam is built up on the surface and acts as an insulation layer. Use : In plastics(pp, pvc, pe, etc. ), polyester, rubber, and expandable fireproof coatings. Packing : 25kg woven bag with plastic liner. 25kg woven bag with plastic liner.