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Information @ a Glance


  • Magnesium hydroxide is an inorganic compound with the chemical formula Mg(OH)2.

  • Magnesium hydroxide may be referred to as Milk of Magnesia.

  • The solid mineral form of magnesium hydroxide is known as brucite.

  • Magnesium Hydroxide is a white or colorless, odorless powder and is sparingly soluble in water.

  • It is an alkaline hydroxide compound.

  • Magnesium hydroxide is available in the form of tablets or capsules, which are orally ingested with water.

  • Other names for magnesium hydroxide are Magnesium hydrate; milk of magnesia; magnesia magma.

Synthesis Process

  • Mg(OH)2 nano-particles with fiber-like morphology were prepared by chemical precipitation process, with the bittern from Qinghai Salt Lakes used as Mg2+ raw material and ammonia water as precipitator.

  • It is generally prepared by reacting magnesium sulfate or chloride with sodium hydroxide.

  • Magnesium hydroxide is commercially available and there is no need to prepare it in the laboratory. It can be precipitated by the metathesis reaction between magnesium salts and sodium, potassium, or ammonium hydroxide.

  • Magnesium hydroxide(MH), which is commonly used as a halogen-free flame retardant filler in composite materials, was modified by silanization reaction with ?-aminopropyltriethoxysilane (?-APS) in aqueous solution at different pH values


  • Magnesium hydroxide used as a clarifier (a substance that removes impurities) in the refining of sugar.

  • It also used as an additive in the treatment of wastewater to neutralize acids present in the wastes.

  • Magnesium hydroxide acts as a drying agent in some food products.

  • It used as a flame retardant coating on fabrics and other materials used by consumers and industries.

  • The major use of magnesium hydroxide is as an antacid for stomach upsets.


  • The chemical compositions of the brucite and Ca(OH)2 gel were determined using standard wet chemical techniques. A sedimentation
    technique was used to remove CaCO 3 contaminants from the brucite phase.

  • A new multielement masking technique using magnesium hydroxide coprecipitation applied for the selective determination of Pb by differential pulse anodic stripping voltammetry (DPASV).

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