White or yellowish crystalline powder, non-irritating odor, is an additive flame retardant. Soluble in solvents such as toluene, chlorobenzene and acetone, slightly soluble in methanol, insoluble in water. Melting point range: 112~115 °C, thermal decomposition temperature above 340 °C. Non-flammable and explosive, with unique P and N hybrid structure, exhibits high thermal stability, flame retardancy, high oxygen index (LOI) and low smoke release performance. It is an additive halogen-free flame retardant. Widely used in epoxy resin, copper clad laminates, LED light-emitting diodes, powder coatings, potting materials and polymer materials. It is an excellent fire retardant material and self-extinguishing material.