Dicalcium phosphate

Dicalcium phosphate
Names
IUPAC name
calcium hydrogen phosphate
Other names
calcium hydrogen phosphate,
phosphoric acid calcium salt (1:1)
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.028.933 Edit this at Wikidata
E number E341(ii) (antioxidants, ...)
UNII
  • InChI=1S/Ca.H3O4P.2H2O/c;1-5(2,3)4;;/h;(H3,1,2,3,4);2*1H2/q+2;;;/p-2 ☒N
    Key: XAAHAAMILDNBPS-UHFFFAOYSA-L ☒N
  • InChI=1/Ca.H3O4P.2H2O/c;1-5(2,3)4;;/h;(H3,1,2,3,4);2*1H2/q+2;;;/p-2
    Key: XAAHAAMILDNBPS-NUQVWONBAM
  • O.O.OP(=O)([O-])[O-].[Ca+2]
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)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
0
0
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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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]

  1. ^ Corbridge, D. E. C. (1995). "Phosphates". Phosphorus - an Outline of its Chemistry, Biochemistry and Uses. Studies in Inorganic Chemistry. Vol. 20. pp. 169–305. doi:10.1016/B978-0-444-89307-9.50008-8. ISBN 9780444893079.
  2. ^ Salinas, Antonio J.; Vallet-Regí, María (2013). "Bioactive ceramics: From bone grafts to tissue engineering". RSC Advances. 3 (28): 11116. Bibcode:2013RSCAd...311116S. doi:10.1039/C3RA00166K.