Magnesium Carbonate
What is magnesium carbonate good for?
Magnesium carbonate is valued for its ability to regulate acidity, stabilize dry formulations, and improve powder handling. It supports uniform blending, helps maintain product quality during storage, and functions as a reliable mineral component in food systems, personal care products, and various technical applications.
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Product name： |
Magnesium Carbonate |
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Synonyms: |
Magnesite |
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CAS: |
13717-00-5 |
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Molecular formula: |
CH2O3.Mg |
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Molecular weight: |
86.33 |
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Appearance: |
White or almost white powder |
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Assay(MgO): |
40.0% ~ 45.0% |
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Odor: |
Odorless |
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Solubility: |
Practically insoluble in water |
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MOQ: |
25 kg |
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Packing: |
25kg/drum |
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Storage: |
Store in a cool and dry place, keep away from direct sunlight and heat. |
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Shelf life: |
24 months |
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Certificate： |
ISO9001,FSSC22000 |
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Product characteristics |
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Product name： |
Magnesium Carbonate |
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Synonyms: |
Magnesite |
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CAS: |
13717-00-5 |
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Functionality: |
Alkalizing agent, drying agent, color fixative, anti-caking agent, filler, leavening agent, acidity regulator, etc. |
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Application: |
Flour, milk powder, seasonings, baking ingredients, raw material for magnesium supplements, toothpaste raw material, rubber industry, cosmetics, etc. |
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Recommended usage method: |
Usage level should be determined based on specific application, formula structure, and desired product characteristics. |
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Product profile |
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Appearance: |
White or almost white powder |
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Identification: |
A. Bulk density B. It gives the reaction of carbonates C. The solution gives the reaction of magnesium |
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Solubility: |
Practically insoluble in water. It dissolves in dilute acids with effervescence. |
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Appearance of solution: |
Not more intensely colored than reference solution B4 |
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Chlorides: |
NMT 700 ppm |
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Sulfates: |
NMT 0.60% |
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Calcium: |
NMT 0.75% |
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Iron: |
NMT 400 ppm |
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Bulk density: |
NMT 0.20 g/ml |
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Assay(MgO): |
40.0% ~ 45.0% |
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Packaging |
25kg/drum |
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Storage |
Store in a cool and dry place, keep away from direct sunlight and heat. |
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Shelf life |
24 months from date of manufacture |
Food anti-caking agent
Magnesium carbonate is commonly used in powdered foods as an anti-caking agent. It absorbs moisture, improves flowability, and prevents clumping during processing, storage, and transportation, helping maintain uniform particle dispersion in seasoning powders, drink mixes, and nutritional premixes.
Acidity regulator and buffering agent
It functions as a mild alkaline buffering agent to help stabilize pH in certain food and beverage systems. This property supports product consistency, protects sensitive ingredients, and contributes to controlled processing conditions in formulated powder blends.
Mineral fortification source
Magnesium carbonate serves as a magnesium source in dry formulations such as tablets, capsules, and powdered blends. It offers good stability under normal processing conditions and is suitable for applications requiring controlled magnesium content and long shelf life.
Cosmetic absorbent powder
Magnesium carbonate is applied in cosmetic powders as an oil-absorbing and mattifying agent. It helps improve skin feel, reduces greasiness, and enhances the texture and spreadability of pressed and loose powder formulations.
Rubber and plastics filler
In polymer processing, it is used as an inorganic filler to improve dimensional stability and processing performance. It can enhance stiffness, control viscosity, and contribute to more consistent extrusion and molding behavior.
Excellent moisture adsorption capacity:
The porous structure offers strong moisture-binding ability, helping maintain powder dryness, prevent agglomeration, and improve storage stability. This feature is especially valuable in hygroscopic formulations and environments with variable humidity.
Good thermal and chemical stability:
Magnesium carbonate remains stable under normal processing temperatures and shows low reactivity with most formulation components, making it suitable for dry mixing, tableting, and other standard manufacturing processes.
High surface area and adsorption performance:
Its large specific surface area enables effective adsorption of liquids, flavors, and active compounds, allowing use as a carrier material to improve dispersion uniformity and reduce segregation in complex premixes.
Q1:What is the main component of magnesium carbonate?
A: Magnesium carbonate primarily consists of MgCO₃, an inorganic magnesium salt formed from magnesium ions and carbonate ions.
Q2: How does magnesium carbonate work?
A: Magnesium carbonate works primarily by releasing magnesium ions (Mg²⁺) when dissolved in liquids or reacting with acids. These ions participate in chemical processes such as neutralizing acidity, stabilizing pH, and supporting mineral balance. In powders, it also improves flow, prevents clumping, and enhances dispersion of other ingredients.
Q3: Can you provide OEM services for magnesium carbonate-based formulations?
A: Yes, we can provide OEM services for magnesium carbonate-based formulations. Our team can customize powder blends, adjust particle size, density, and flow properties, and ensure consistent quality to meet your specifications. We support tailored solutions for food, cosmetic, and industrial applications with reliable production and packaging options.
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