Dicalcium phosphate
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Dicalcium phosphate is the calcium phosphate with the formula CaHPO4 and its dihydrate. The "di" prefix in the common name arises because the formation of the HPO42– anion involves the removal of two protons from phosphoric acid, H3PO4. It is also known as dibasic calcium phosphate or calcium monohydrogen phosphate. Dicalcium phosphate is used as a food additive, it is found in some toothpastes as a polishing agent and is a biomaterial.[1][2]
Quick Facts Names, Identifiers ...
Names | |
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IUPAC name
calcium hydrogen phosphate | |
Other names
calcium hydrogen phosphate, phosphoric acid calcium salt (1:1) | |
Identifiers | |
3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.028.933 |
E number | E341(ii) (antioxidants, ...) |
PubChem CID |
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UNII |
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CompTox Dashboard (EPA) |
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Properties | |
CaHPO4 | |
Molar mass | 136.06 g/mol (anhydrous) 172.09 (dihydrate) |
Appearance | white powder |
Odor | odorless |
Density | 2.929 g/cm3 (anhydrous) 2.31 g/cm3 (dihydrate) |
Melting point | decomposes |
0.02 g/100 mL (anhydrous) 0.02 g/100 mL (dihydrate) | |
Structure | |
triclinic | |
Hazards | |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Related compounds | |
Other anions |
Calcium pyrophosphate |
Other cations |
Magnesium phosphate Monocalcium phosphate Tricalcium phosphate Strontium phosphate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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