Study of Process and Current Status of Polyphosphoric Acid

Polyphosphoric acid offers many advantages in application and handling.In recent years,it is replacing industrial sulfuric acid in many fields.The property,production process,application and current status of polyphosphoric acid are outlined.It is considered that the production of polyphosphoric acid with purified wet-process phosphoric acid instead of industrial sulfuric acid will help the development of the phosphate chemical industry of China in the direction of high technology and high added value.