7757-87-1

  • Chemical Formula: Mg3(PO4)2
  • Molecular Weight: 262.855 g/mol
  • CAS Number: 7757-87-1
  • Density: 2.195 g/cm³
  • Melting Point: 1184°C

Physical Properties

  • Appearance: White crystalline powder
  • Solubility: Insoluble in water but soluble in acids
  • Odor: Odorless

Chemical Properties

Magnesium phosphate is an ionic compound that reacts with water to form phosphoric acid and magnesium hydroxide. It also reacts with hydrochloric acid to produce magnesium chloride and phosphoric acid. The compound is non-flammable and stable under normal conditions.

Uses

  • Dietary Supplements: Magnesium phosphate is used as a source of magnesium and phosphorus, supporting bone health and muscle function.
  • Food Industry: It is used as a nutrient, pH control agent, and stabilizer in food products.
  • Medical Applications: It helps in preventing muscle cramps and vitamin E deficiency.
  • Industrial Uses: Magnesium phosphate is used in ceramics, cement additives, fireproofing materials, and water treatment processes.

Preparation

Trimagnesium phosphate can be synthesized by reacting tribasic orthophosphoric acid with magnesium hydroxide. The reaction is as follows: 2H3​PO4​+3Mg(OH)2​→Mg3​(PO4​)2​+6H2​O

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