1. No toxicity,No halogen 2. High degree of polymerization 3.High ... APP) Molecular formula : (NH4PO3)n n>1000Model No.: HC-APPCrystallized II type Ammonium Polyphosphate is a kind of environmental-protected and ... atmosphere flam retardant effect. APP have also low smoke, no toxicity, no molten drop, is a high effection and inorganic new ... bag, Net weight:25kgs chemical auxiliary agent- app phase II