Calcium pyrophosphate
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Calcium pyrophosphate | |
---|---|
IUPAC name | Dicalcium phosphonato phosphate |
Other names | Calcium diphosphate |
Identifiers | |
CAS number | [7790-76-3] |
PubChem | |
MeSH | |
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.