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Magnesium Carbonate

  • Magnesium Carbonate

    Molecular Formula MgCO3
    Category Antacid; Osmotic laxative
    Storage Condition Store protected from moisture

    Application

    Magnesite and dolomite minerals are used to produce magnesium metal and basic refractory bricks. Magnesium Carbonate is also used in flooring, fire proofing, fire extinguishing compositions, cosmetics, dusting powder and toothpaste. Other applications are as filler material, smoke suppressant in plastics, a reinforcing agent in neoprene rubber, a drying agent and colour retention in floods. In addition, high purity magnesium carbonate is used as antacid and as an additive in table salt to keep it free flowing.

    Sr. No. Test Parameters Specification / Limits
    1 Description A very light, white powder, 15 gm occupies a volume of about 125 ml
    2 Solubility Practically insoluble in water, soluble in mineral acids
    3 Identification (A)
    (B)
    It gives the reaction of carbonates
    It gives the reaction of magnesium salts
    4 Appearance of solution Solution A is not more intensely colored than Reference solution BS3
    5 Arsenic Not more than 2 ppm
    6 Heavy Metals Not more than 20 ppm
    7 Chloride Not more than 0.1 %
    8 Iron Not more than 400 ppm
    9 Calcium Not more than 0.75 %
    10 Sulphate Not more than 0.3 %
    11 Copper No blue colour is produced
    12 Soluble Substances Not more than 10 mg
    13 Substance Insoluble in Acetic Acid Not more than 2.5 mg
    14 Assay as MgO Between 40.0 % to 45.0 % of MgO
    Molecular Formula MgCO3
    Molecular Weight 84.31 gm/mol

    Application

    Magnesite and dolomite minerals are used to produce magnesium metal and basic refractory bricks. Magnesium Carbonate is also used in flooring, fire proofing, fire extinguishing compositions, cosmetics, dusting powder and toothpaste. Other applications are as filler material, smoke suppressant in plastics, a reinforcing agent in neoprene rubber, a drying agent and colour retention in floods. In addition, high purity magnesium carbonate is used as antacid and as an additive in table salt to keep it free flowing.

    Sr. No. Test Parameters Specification / Limits
    1 Description A white or almost white powder.
    2 Solubility Practically insoluble in water, It dissolves in dilute acids with effervescence.
    3 Identification - A
    B
    C
    Apparent volume Not less than 100 ml/15gm
    It gives the reaction of Carbonates.
    It gives the reaction of Magnesium.
    4 Appearance of solution Solution S is not more intensely colored than Ref.sol B4.
    5 Soluble Substances Not more than 10 mg.
    6 Substance Insoluble in Acetic Acid Not more than 2.5 mg
    7 Chlorides Not more than 700 ppm
    8 Sulphates Not more than 0.3 %
    9 Arsenic Not more than 2 ppm
    10 Calcium Not more than 0.75 %
    11 Iron Not more than 400 ppm
    12 Heavy Metals Not more than 20 ppm
    13 Assay as MgO Between 40.0 % to 45.0 % of MgO