Calcium pyrophosphate

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Calcium pyrophosphate
IUPAC name Dicalcium phosphonato phosphate
Other names Calcium diphosphate
Identifiers
CAS number [7790-76-3]
PubChem 24632
MeSH Calcium+pyrophosphate
SMILES [O-]P(=O)([O-])OP(=O)([O-])[O-].[Ca+2].[Ca+2]
Properties
Molecular formula Ca2O7P2
Molar mass 254.099
Density 3.09 g/cm3
Melting point

1230

Solubility in water Insoluble in cold water
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Calcium pyrophosphate (Ca2O7P2) is a chemical compound that can be formed by the reaction of pyrophosphoric acid and a calcium base or by strongly heating calcium hydrogen orthophosphate or calcium ammonium orthophosphate.

It is commonly used as a mild abrasive agent in toothpastes.

Deposition of CPPD in articular joints causes an arthritis condition called pseudogout.

[edit] See also


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