|Jmol-3D images||Image 1|
|Molar mass||136.06 g/mol|
|Solubility in water||0.02 g/100 mL|
|EU Index||Not listed|
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)|
|(what is: / ?)|
Dicalcium phosphate, also known as dibasic calcium phosphate or calcium monohydrogen phosphate, is a type of calcium phosphate that is dibasic. It is usually found as the dihydrate, with the chemical formula of CaHPO4•2H2O, but it can be thermally converted to the anhydrous form, which has been referred to by the abbreviation 'DPCA'. It is practically insoluble in water, with a solubility of 0.02 g per 100 mL at 25 °C. It contains about 29.5 percent calcium in its anhydrous form. On contact with water, it converts to hydroxyapatite, which is insoluble solid, and phosphoric acid.
- CaCl2 + H3PO4 + 2 NaOH → CaHPO4 + 2 NaCl + 2 H2O
Calcium carbonate is also used in place of the calcium chloride and sodium hydroxide.
Dicalcium phosphate is mainly used as a dietary supplement in prepared breakfast cereals, dog treats, enriched flour, and noodle products. It is also used as a tableting agent in some pharmaceutical preparations, including some products meant to eliminate body odor. Dicalcium phosphate is also found in some dietary calcium supplements (e.g. Bonexcin). It is used in poultry feed. It is also used in some toothpastes as a tartar control agent.
- Liu, Xue et al. (March 2013). "Fluidized Bed Drying of Pharmaceutical Materials: Moisture Measurement and Effects of Particle Size". Am. Pharm. Rev.: 32. ISSN 1099-8012.
- Klaus Schrödter, Gerhard Bettermann, Thomas Staffel, Friedrich Wahl, Thomas Klein, Thomas Hofmann "Phosphoric Acid and Phosphates" in Ullmann’s Encyclopedia of Industrial Chemistry 2008, Wiley-VCH, Weinheim. doi:10.1002/14356007.a19_465.pub3
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