Composition：Zinc/Aluminum Phosphite                          

Chemical formula：ZnHPO₃/Al₂(HPO₃)₃

Application：Zinc/Aluminum Phosphite is an inorganic flame retardant primarily used for flame retardant modification of polymer materials (such as plastics, rubber, coatings, etc.). At high temperatures, it decomposes to generate phosphate-based substances, promoting the formation of a dense carbon layer on the material surface, which isolates oxygen and heat transfer. During decomposition, it absorbs significant heat, reducing the material's surface temperature and delaying combustion. It is applied in flame-retardant cables, circuit board casings, and added to polyolefins, polyamides, and other materials for fireproof coatings, heat-insulating foams, etc. It is also used in automotive interiors, high-speed rail components, and other plastic products requiring flame retardancy. It is environmentally friendly, low-toxicity, compliant with RoHS and other environmental regulations, exhibits good thermal stability, and is suitable for materials processed at hig