Pyrophosphoric Acid is an inorganic compound that is used in various industrial applications. It can also be referred to as Diphosphoric Acid, Tetraphosphoric Acid, or Di-polyphosphoric acid. These are all synonyms of Pyrophosphoric Acid and are used interchangeably in many chemical and scientific contexts. Pyrophosphoric Acid is typically prepared by heating Orthophosphoric Acid, which results in dehydration and the formation of Pyrophosphoric Acid. It is commonly used as a sequestrant, buffering agent, and as a catalyst. Its properties make it an ideal ingredient in the food and pharmaceutical industries, where it is used in the production of various products.