Phosphoric Acid is a mineral compound with the formula H3PO4, which is highly soluble in water. It is also known as orthophosphoric acid. It can also be referred to a chemical or reagent consisting of phosphoric acid such as pyrophosphoric acid or triphosphoric acid but usually orthophosphoric acid. It has a wide variety of usage in various applications like rust inhibitor, food additive, dental and orthopedic etchant, electrolyte, flux, dispersing agent, industrial etchant, fertilizer feedstock and component for home clearing products.