Magnesium Carbonate

Magnesium Carbonate
Magnesium Carbonate
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    1. General Description
    Chinese name: Magnesium Carbonate Basic
    English name: magnesium carbonate basic
    Other name(s): magnesoum carbonate hydroxide
    Molecular formula:4MgCO3·Mg(OH)2·5H2O
    Molecular weight (MW): 485.80
    CAS No.: 39409-82-0
    EINECS No.: 235-192-7

    The magnesium carbonate basic, or basic magnesium carbonate, is white loose powder or brittle substance with density of 2.16g/mL at 20 ℃. In water, it is almost insoluble but can cause mild alkaline reaction. It is insoluble in ethanol, but dissolve and foam in dilute acid.No decomposition happens under normal conditions.

    2. Our Advantages
    Our magnesium carbonate basic is made by chemical synthesis of bring and soda at a certain temperature and concentration.

    According to customers' requirements, we can provide the chemical in different bulk density and specific surface area, and the particle size is basically controllable. In the case of light magnesium carbonate, the bulk density can be 0.14 g/cm3, and the particle size can be controlled within 3 microns.

    3. Properties
    ItemLight magnesium carbonate basicHeavy magnesium carbonate basic
    Appearancewhite powderwhite powder
    MgO %40-43.540-43.5
    CaO %≤0.08≤0.08
    Hydrochloric acid insoluble %≤0.05≤0.05
    Iron ppm≤15≤15
    Loss on ignition %55-6055-60
    Sulphates %≤0.10≤0.10
    Chlorides %≤0.05≤0.05
    Arsenic ppm≤2 ppm≤2 ppm
    Heavy metal ppm≤10 ppm≤10 ppm
    Bulk density g/cm3≤0.20≥0.50
    Whiteness %≥95≥95

    4. Packaging
    Light magnesium carbonate basic: 20Kg or 10Kg / polywoven bag or kraft paper bag
    Heavy magnesium carbonate basic: 25Kg / polywoven bag or kraft paper bag

    5. Usage
    The magnesium carbonate basic can be used for the following purposes:
    a) mainly used as a transparent or light-colored rubber filler and reinforcing agent, improving the abrasion resistance, tensile strength and bending resistance of the rubber; also as an additive for paints, coatings and graphites; or in toothpaste, cosmetics, pharmaceutical and other industries.

    b) as flour treatment agent, chewing gun base, alkaline agent, desiccant, color protection agent, anti-caking agent, leavening agent and acidity regulator, used for edible salt, powdered sugar, acidified cream, milk, ice cream, and cookies. As a flour treatment agent, the maximum dosage is 5.0g/kg, and in wheat flour, the maximum dosage is 1.5g/kg (flour).

    c) for the manufacture of magnesium salts,medicine and the clear liquid filtration; as ingredient of heat insulating materials, rubber and specialty glass.

    d) an excellent rubber filler and reinforcing agent, which is more effective than calcium carbonate and clay. The refractive index of magnesium carbonate basic is similar to natural rubber, so it is suitable for the manufacture of transparent or translucent products, such as tapes, plastic wires, sports and health products, hoses, etc.

    e) an alternative to magnesium oxide in chloroprene adhesive, improving glue transparency.

    f) also used in the manufacture ofmagnesium salt, magnesium oxide, fireproof coating, ink, ceramic, glass, toothpaste, talcum powder and shavingointment.

    g) as antacids in medical field; also commonly used as a desiccant, filter media, anti-caking agents, heat insulation and fire resistant material.

    6. Storage and Handling
    The chemical should be stored in dry and ventilated warehouse. Prevent moisture and heat. Handle with care to prevent damage to packing. It should be stored separately from toxic substances.

    QIANGYUAN is one of the most outstanding chemical manufacturers in China. Our products are targeted at many different fields, and welcome to work with us.

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