Magnesium Phosphate - Mg3(PO4)2

What is Magnesium Phosphate?

Magnesium Phosphate, Mg3(PO4)2 is an important mineral found in bones, in the seeds of many plants, and in a number of minerals. It is taken as a source of supplemental dietary magnesium. Tribasic magnesium phosphate may be prepared by the interaction of magnesium chloride, or sulfate with the phosphate salt. The solution is easily prepared by agitating some of the salt with carbon dioxide free water for several hours.

Other name – Trimagnesium diphosphate, Phosphoric acid magnesium salt

Mg3O8P2 Magnesium Phosphate
Density 2.195 g/mL at 25 °C(lit)
Molecular Weight/ Molar Mass 262.855 g/mol
Hydrogen Bond Acceptor 8
Melting Point 1,184 °C
Chemical Formula Mg3(PO4)2

Magnesium Phosphate Structure – Mg3(PO4)2

Magnesium Phosphate

Physical Properties of Magnesium Phosphate – Mg3(PO4)2

Odour No odour
Appearance White crystalline powder
Covalently-Bonded Unit 5
Complexity 36.8
pH 6-9.5
Solubility Soluble in salt solution

Chemical Properties of Magnesium Phosphate – Mg3(PO4)2

    • Magnesium Phosphate is a salt when treated with water forms phosphoric acid and magnesium hydroxide. The chemical equation is given below.

Mg3(PO4)2 + H2O → H3PO4 + Mg(OH)2

    • Magnesium Phosphate reacts with hydrochloric acid forms phosphoric acid and magnesium chloride.

Mg3(PO4)2 + HCl → MgCl2 + H3PO4

Uses of Magnesium Phosphate – Mg3(PO4)2

  • Used as a source for both magnesium and phosphorus. It is used in minimal supplement.
  • Used in the prevention of vitamin E deficiency.
  • Used in foods at levels not to exceed current good manufacturing practice. The ingredient also may be used in infant formula.
  • Used as a nutrient, pH control agent and stabilizer.

Leave a Comment

Your email address will not be published. Required fields are marked *