Magnesium phosphate tribasic

Magnesium phosphate tribasic

Names
IUPAC name Trimagnesium Diphosphate
Other names magnesium phosphate, phosphoric acid, magnesium salt (2:3), tertiary magnesium phosphate, trimagnesium phosphate
Identifiers
CAS Number	10233-87-1
3D model (Jmol)	Interactive image
ECHA InfoCard	100.028.931
Gmelin Reference	15662
PubChem	24439
UNII	453COF7817 Y
InChI InChI=1S/3Mg.2H3O4P/c;;;2*1-5(2,3)4/h;;;2*(H3,1,2,3,4)/q3*+2;;/p-6
SMILES [O-]P(=O)([O-])[O-].[O-]P(=O)([O-])[O-].[Mg+2].[Mg+2].[Mg+2]
Properties
Chemical formula	Mg3O8P2
Molar mass	262.85 g·mol−1
Appearance	White crystalline powder
Melting point	1,184 °C (2,163 °F; 1,457 K)
Solubility in water	Insoluble
Solubility	Soluble in salt solution
Magnetic susceptibility (χ)	−167·10−6 cm3/mol (+4 H2O)
Hazards
R-phrases	R25, R36, R37, R38
NFPA 704	0 1 0
Flash point	N/A
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Trimagnesium phosphate is a compound with formula Mg₃(PO₄)₂. It is a magnesium acid salt of phosphoric acid.

It can be formed by reaction of stoichiometric quantities of monomagnesium phosphate with magnesium hydroxide.

Found in nature in octohydrate form as the mineral bobierrite.

Magnesium phosphate tribasic is listed on the FDA's generally recognized as safe, or GRAS, list of substances.