Dicalcium phosphate

Dicalcium phosphate
Names
	IUPAC name calcium hydrogen phosphate
	Other names calcium hydrogen phosphate,; phosphoric acid calcium salt (1:1)
Identifiers
CAS Number	7757-93-9 ; 7789-77-7 (dihydrate) ;
3D model (JSmol)	Interactive image;
ChemSpider	94606 ;
ECHA InfoCard	100.028.933
E number	E341(ii) (antioxidants, ...)
PubChem CID	104805;
UNII	L11K75P92J ; O7TSZ97GEP (dihydrate) ;
CompTox Dashboard (EPA)	DTXSID90872536 ;
	InChI InChI=1S/Ca.H3O4P.2H2O/c;1-5(2,3)4;;/h;(H3,1,2,3,4);21H2/q+2;;;/p-2 Key: XAAHAAMILDNBPS-UHFFFAOYSA-L ; InChI=1/Ca.H3O4P.2H2O/c;1-5(2,3)4;;/h;(H3,1,2,3,4);21H2/q+2;;;/p-2 Key: XAAHAAMILDNBPS-NUQVWONBAM;
	SMILES O.O.OP(=O)([O-])[O-].[Ca+2];
Properties
Chemical formula	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
Solubility in water	0.02 g/100 mL (anhydrous); 0.02 g/100 mL (dihydrate)
Structure
Crystal structure	triclinic
Hazards
NFPA 704 (fire diamond)	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). verify (what is ?) Infobox references

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 HPO₄^2– 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.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.