Phosphorus pentachloride is a white or light yellow solid. It is often used as a highly effective active chlorinating agent and catalyst. It is widely used in the fields of medicine, dyes, chemical fiber manufacturing, and pesticide synthesis. It is a raw material for the production of chlorinated phosphazene and phosphorus oxychloride. . At present, about 50% of phosphorus pentachloride on the market is used in traditional fields. With the continuous development of new energy, the proportion of phosphorus pentachloride used in the production of lithium hexafluorophosphate will become higher and higher in the future. In addition, it is also used in the synthesis of hexachlorocyclotriphosphazene, etc.