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Pyrophosphate
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"Diphosphate" redirects here. It can also refer to any salt containing two phosphate groups.
Pyrophosphate
Pyrophosphate anion.png
Pyrophosphate anion
Names
Other names
Diphosphate or dipolyphosphate
Identifiers
3D model (JSmol)
Interactive image
ChEBI
CHEBI:18361 ☑
ChemSpider
559142 ☑
DrugBank
DB04160 ☑
E numberE450 (thickeners, ...)
PubChem CID
644102
InChI[show]
SMILES[show]
Properties
Chemical formula
P2O74−
Molar mass173.943 g·mol−1
Conjugate acidPyrophosphoric acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
In chemistry, a pyrophosphate are phosphorus oxyanions that contain a P-O-P linkage.[citation needed] A number of pyrophosphate salts exist, such as Na2H2P2O7, as well as the normal pyrophosphates. Often pyrophosphates are called diphosphates. The parent pyrophosphates are derived from partial or complete neutralization of pyrophosphoric acid. Important salts are disodium pyrophosphate and tetrasodium pyrophosphate. The pyrophosphate bond, as found in ATP, is very important in biochemistry.