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**Molecular formula:** H₃PO₄ **Molar mass:** 97.996 g/mol **Description:** Orthophosphoric acid, commonly known as phosphoric acid, is a colorless crystalline solid. It is a moderately strong tribasic acid with no oxidizing properties. Most metals do not dissolve in phosphoric acid, as the dilute solution forms a surface layer of insoluble phosphates. **Applications:** Phosphoric acid is used as a food additive (E338) and is a key raw material in the production of phosphate fertilizers. **Occurrence:** Phosphoric acid is typically present in the form of a phosphate anion bound to biochemical compounds, such as nucleic acids, and is naturally found in living organisms.
