- Technical/ IP
- 0.02 g/100 mL (anhydrous) 0.02 g/100 mL (dihydrate)
- white powder
Dicalcium Phosphate is one of the most commonly used dietary supplements that are utilized in cereals, noodles, dog treats, and flour. It is known to have chemical formula CaHPO4 with molecular weight of 136.06 g/mol in anhydrous form and density 2.929 g/cm3. This compound can be prepared by neutralization of calcium hydroxide with phosphoric acid. It is a biomaterial, which also finds application in some toothpaste as a polishing agent. Dicalcium Phosphate offered by us also serves as tableting agent in pharmaceutical industry and is known to have ability to eliminate body odor as well.
Chemical formula: CaHPO4
Description: Dibasic calcium phosphate is mainly used as a dietary supplement in prepared breakfast cereals, dog treats.
Dicalcium phosphate is the calcium phosphate with the formula CaHPO and its dihydrate. The "di" prefix in the common name arises because the formation of the HPO42â 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.
Dibasic calcium phosphate is produced by the neutralization of calcium hydroxide with phosphoric acid, which precipitates the dihydrate as a solid. At 60 Â°C the anhydrous form is precipitated:
H3PO4 + Ca(OH)2 â CaHPO4
To prevent degradation that would form hydroxyapatite, sodium pyrophosphate or trimagnesium phosphate octahydrate are added when for example, dibasic calcium phosphate dihydrate is to be used as a polishing agent in toothpaste.
In a continuous process CaCl2 can be treated with (NH4)2HPO4 to form the dihydrate:
CaCl2 + (NH4)2HPO4 â CaHPO4â¢2H2O
A slurry of the dihydrate is then heated to around 65â70 Â°C to form anhydrous CaHPO4 as a crystalline precipitate, typically as flat diamondoid crystals, which are suitable for further processing.
Dibasic calcium phosphate dihydrate is formed in "brushite" calcium phosphate cements (CPC's), which have medical applications. An example of the overall setting reaction in the formation of "Î²-TCP/MCPM" (Î²-tricalcium phosphate/monocalcium phosphate) calcium phosphate cements is:
Ca3(PO4)2 + Ca(H2PO4)2â¢H2O + 7 H2O â 4 CaHPO4â¢2H2O
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