Phosphoric acid (H3PO4) in its 85% concentration is a strong mineral acid widely used in various industries. It is a colorless, odorless liquid that is highly soluble in water. This concentrated form of phosphoric acid finds applications in sectors such as the food and beverage industry, where it is used as an acidulant and flavor enhancer in soft drinks and other products. It is also used as a rust converter and as an ingredient in household cleaners.

In the chemical industry, 85% phosphoric acid serves as a raw material for the production of phosphate salts, which are used in fertilizers, detergents, and water treatment. Additionally, it finds use in the synthesis of various chemicals and in the removal of rust and mineral deposits. Due to its corrosive nature, safe handling and storage procedures are essential when working with phosphoric acid.