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    Magnesium Carbonate

    Magnesium Carbonate in Tradeasia

    IUPAC Name

    Magnesium Carbonate

    Cas Number

    23389-33-5 or 546-93-0

    HS Code






    Basic Info


    White Powder

    Common Names

    N-hydrate; Magnesium carbonate (1:1) hydrate


    1000 @ 20 kg kraft paper bag with inner plastic bag in 20MT / 20FCL

    Brief Overview


    Magnesium carbonate, MgCO3, is an inorganic salt that is a white solid. Several hydrated and basic forms of magnesium carbonate also exist as minerals. The most common magnesium carbonate forms are the anhydrous salt called magnesite (MgCO3). All forms of magnesium carbonate react in acids. Magnesium carbonate crystallizes in the calcite structure where in Mg2+ is surrounded by six oxygen atoms.


    Manufacturing Process


    Magnesium carbonate can be manufactured from reaction between magnesium hydroxide and carbon dioxide. Magnesium hydroxide is treated with 3.5 to 5 atm of carbon dioxide below 50 °C, giving soluble magnesium bicarbonate:

    Mg(OH)2 + 2 CO2 → Mg(HCO3)2

    Following the filtration of the solution, the filtrate is dried under vacuum to produce magnesium carbonate as a hydrated salt.

    Pharmaceutical Industry

    Magnesium carbonate is an antacid used for symptomatic relief of heartburn, indigestion, and upset stomach


    Detergent Industry


    Used in bath products, makeup products, personal cleanliness products, shaving products, oral care products and skin and hair care products.


    Construction Industry


    The primary use of magnesium carbonate is the production of magnesium oxide by calcining. Magnesite and dolomite minerals are used to produce refractory bricks. MgCO3 is also used in flooring, fireproofing, fire extinguishing compositions, and dusting powder.


    Other Applications


    Used as a drying agent for hands in rock climbing, gymnastics, and weight lifting. Magnesium carbonate is also used in taxidermy for whitening skulls. It can be mixed with hydrogen peroxide to create a paste, which is then spread on the skull to give it a white finish. It can also be used as filler material, smoke suppressant in plastics and reinforcing agent in neoprene rubber.

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