Product Name: Ammonium polyphosphate; CAS: 68333-79-9; MF: (NH4PO3)n; EINECS: 269-789-9; Application: It is widely used in intumescent fire retardant coatings, polyethylene, polypropylene, polyurethane, epoxy resin, rubber products, fiberboard and dry powder fire extinguishers. It has high flame retardancy, dimensional stability, hydrolysis resistance and heat resistance in polyurethane rigid foams. It has inflatable and flame retardant function, so it is more conducive to smoke reduction and anti-dripping. In addition to rigid polyurethane foam and polyester soft polyurethane foam, it is also used in other resins, adhesives and coatings.