Calcium pyrophosphate: Difference between revisions
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'''Calcium pyrophosphate''' (Ca<sub>2</sub>O<sub>7</sub>P<sub>2</sub>) is a chemical compound that can be formed by the reaction of [[pyrophosphoric acid]] and a calcium base or by strongly heating [[calcium |
'''Calcium pyrophosphate''' (Ca<sub>2</sub>O<sub>7</sub>P<sub>2</sub>) is a chemical compound that can be formed by the reaction of [[pyrophosphoric acid]] and a calcium base or by strongly heating [[calcium phosphate]] or calcium ammonium phosphate. |
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It is commonly used as a mild abrasive agent in [[toothpastes]]. |
It is commonly used as a mild abrasive agent in [[toothpastes]]. |
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Revision as of 21:35, 14 April 2010
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| Names | |
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| IUPAC name
Calcium diphosphate
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| Other names
Diphosphoric acid, calcium salt (1:2)
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.029.292 |
| E number | E450(vi) (thickeners, ...) |
| MeSH | Calcium+pyrophosphate |
PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| Ca2O7P2 | |
| Molar mass | 254.053 g/mol |
| Density | 3.09 g/cm3 |
| Melting point | 1230 °C |
| insoluble | |
| Hazards | |
| NFPA 704 (fire diamond) | |
| Flash point | Non-flammable |
| Related compounds | |
Other anions
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Calcium phosphate |
Other cations
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Magnesium pyrophosphate Sodium pyrophosphate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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 phosphate or calcium ammonium phosphate.
It is commonly used as a mild abrasive agent in toothpastes.
Deposition of CPPD in articular joints causes an arthritis condition called pseudogout.
See also
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