Phosphoric acid is not volatile, not easy to decompose, and has almost no oxidation. Phosphoric acid is mainly used in pharmaceutical, food, fertilizer and other industries, including as antirust agent, food additive, dental and orthopedic, EDIC corrosive, electrolyte, flux, dispersant, industrial corrosive, fertilizer raw material and component of household cleaning products, and also Can be used as a chemical reagent.