Composition：aluminum phosphite（contain crystal water）

Chemical formula：Al₂(HPO₃)₃

Application：The new inorganic phosphorus environment-friendly halogen-free flame retardant plays a flame retardant role by carbon formation and expansion mechanism. It has excellent effect when it is compound with ADP used as flame retadant in PA-66, which is suitable for glass fiber reinforced and non-reinforced system. Compared with MPP and MCA, the thermal stability of the processing process is excellent, without mold scale, precipitation and other phenomena. Halogen-free, better thermal stability, good mechanical and electrical properties, good coloration. It matches with the plastic processing temperature. The candle wick effect can be suppressed in the fiber addition system.