1) Fertilizer: Four major types of fertilizers are made from phosphoric acid: diammonium phosphate ((NH4)2HPO4; DAP), monoammonium phosphate (NH4H2PO4; MAP), granulated triple superphosphate (GTSP), and superphosphoric acid
2) Animal feed supplement
3) Food industry: a number of products, such as colas, beers, jams, and cheeses, where it adds a touch of tartness to the product
4) Glass Processing: Used as glazing i.e etching and engraving glass
5) Preservatives: Brewery to control fermentation
6) Textile: Removal of iron stains