Glacial phosphoric acid, also known as concentrated phosphoric acid, is a chemical compound widely used in industrial and laboratory settings. Synonyms for this substance can include anhydrous phosphoric acid, orthophosphoric acid, and 85% phosphoric acid. These terms are alternative names that signify the same chemical composition – H3PO4. Glacial phosphoric acid is a viscous and transparent liquid with diverse applications. It is commonly used in the production of fertilizers, detergents, and food additives. Additionally, it serves as an important reagent in analytical chemistry and can be utilized as a pH adjuster. The various synonyms for glacial phosphoric acid help facilitate clear and accurate communication among professionals within different fields.