Pyrophosphoric-acid meaning

pīrō-fŏs-fôrĭk
A glacial or syrupy viscous liquid, H4 P2 O7 , used as a catalyst and in organic chemical manufacture.
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A viscous liquid acid, H4P2O7, which crystallizes when left standing at ordinary temperatures and is easily converted to orthophosphoric acid upon dilution with water.
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A viscous liquid used as a catalyst and in the manufacture of organic chemicals. Chemical formula: H4P2O7.
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A syrupy liquid formed by the dehydration of phosphoric acid; its salts, the pyrophosphates, are used in medicine.
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(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.
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