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Definition of Pyrophosphoric acid
1. Noun. A solid acid formed by reactions of orthophosphoric acid.
Definition of Pyrophosphoric acid
1. Noun. A syrupy liquid formed by the dehydration of phosphoric acid; its salts, the pyrophosphates, are used in medicine. ¹
2. Noun. (inorganic compound) 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. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Pyrophosphoric Acid
Literary usage of Pyrophosphoric acid
Below you will find example usage of this term as found in modern and/or classical literature:
1. Elements of Chemistry: Including the Recent Discoveries and Doctrines of the by Edward Turner (1835)
"On heating this hydrate for several days to 415C, it lost nearly two-thirds of
an equivalent of water, and then principally consisted of pyrophosphoric acid ..."
2. Principles of Theoretical Chemistry: With Special Reference to the by Ira Remsen (1887)
"Phosphoric acid pyrophosphoric acid. The constitution is readily understood by
... It is, like pyrophosphoric acid, a partial anhydride of phosphoric acid, ..."
3. The Principles of Theoretical Chemistry: With Special Reference to the by Ira Remsen (1892)
"The formation of pyrophosphoric acid is represented thus:— H,O ... Pyrophosphoric
Acid, H4P,2O,.—This is a partial anhydride of phosphoric acid formed by ..."
4. Elements of Chemistry: Theoretical and Practical by William Andrew Miller (1873)
"... the orthophosphoric, or the pyrophosphoric acid employed. Owing to the important
influence which the study ..."
5. The Encyclopedia Americana: A Library of Universal Knowledge (1919)
"pyrophosphoric acid.— When concentrated orthophosphoric acid is heated to 415°
F., until it yields, with silver nitrate, a white precipitate (instead of a ..."
6. Biographical Memoirs by National Academy of Sciences (U.S.) (1905)
"For pyrophosphoric acid, the mean value found for the quantity necessary to
extinguish the free sulphuric acid in one gram-molecule of sulphuric acid was ..."
7. Elements of Chemistry: Theoretical and Practical by William Allen Miller (1864)
"... and if the lead salt be suspended in water, and decomposed with sulphuretted
hydrogen, it yields a solution of pyrophosphoric acid ..."
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