The formula for hydrophosphoric acid is H3PO2. This compound is also known as hypophosphorous acid. It is a monobasic acid, meaning it can donate only one proton (H+) per molecule in an aqueous solution.
Hydrophosphoric acid is used in various applications, including as a reducing agent and in the preparation of other phosphorus compounds. It is important to handle this acid with care due to its corrosive nature.