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    Magnesium carbonate

    Update: 2013/10/14 View:
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    Introduction
     

    Chemical Name:

    Magnesium carbonate , Basic Magnesium carbonate

    Molecular Formula:

    xMgCO3·yMg(OH) 2·nH2O

    CAS:

    39409-82-0

    Character:

     In normal temperature, it’s with three hydrates. Light one is white, easily fragile or loose white powder. Odorless. Relative density is 2.2. Melting point is 350. It’s stable in the air. When heated to 700, it will become magnesium oxide. It’s hardly soluble in water, but it’ll bring a slight alkaline reaction. It can not be soluble in ethanol but it could be soluble in olefine acid with sparkling.

    Uses:

     It’s used as drier, color ficatives, anticaking agent, carrier, swelling agent, acidity regulator.

    Packing:

    It is packed with polythene bag as the inner layer, and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg.

    Storage & Transportation:

    It should be stored in a dark, dry and ventilative warehouse, kept away from water and moisture; unloaded with care to avoid damage. Furthermore, it must be stored separately from poisonous substances.

    Quality index:

    Quality index

    GB 25587-2010

    FCC-V

    Assay(MgO)%

    40.0-44.0

    40.0-43.5

    Acid insoluble matter≤%

    0.05

    0.05

    Heavy Metal (Pb) ≤%

    0.001

    0.002

    Calcium oxide≤%

    0.6

    0.6

    Soluble salt≤%

    1.0

    1.0

    Pb≤%

    ---

    0.001

    As≤%

    0.0003

    ---

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