Polyphosphoric acid has wide application fields and broad market demand.

polyphosphoric acid is a colorless and transparent viscous liquid that is miscible with water and insoluble in hydrocarbons and halogenated hydrocarbons. generally, high-concentration polyphosphoric acid is mostly composed of a mixture of orthophosphoric acid, triphosphoric acid, tetraphosphoric acid, pyrophosphoric acid, and high-concentration phosphoric acid. as a chemical substance, polyphosphoric acid is highly corrosive and hygroscopic.…