Usage:

Phosphoric acid is an important material chemical in industry. metal surface treatment, to form a thin film of insoluble phosphate on the metal surface to protect the metal from corrosion; been used as a chemical polishing agent by mixing with nitric to improve the smoothness of the metal surface. phosphate esters is the raw materials for the production of detergents and pesticides; raw materials for the production of phosphorus-containing flame retardants.