pyrophosphoric acid

English

Etymology

pyro- +‎ phosphoric acid

Noun

pyrophosphoric acid (uncountable)

1. A syrupy liquid formed by the dehydration of phosphoric acid; its salts, the pyrophosphates, are used in medicine.
2. (inorganic chemistry) The acid formed by removing a molecule of water from two molecules of phosphoric acid, H₄P₂O₇; this reaction slowly reverses in the presence of water.

Further reading

• pyrophosphoric acid on Wikipedia.Wikipedia