Bulk Magnesium Carbonate Powder Supplier in China
Wholesale PH regulator agent, Drying agent, Color-retention agent, Anti-caking agent, Bulk price, Kosher, Halal, FDA-approved
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What is Magnesium Carbonate?
Magnesium Carbonate is an inorganic magnesium salt widely used in pharmaceuticals, nutraceuticals, food, and industrial applications. Naturally occurring in mineral forms such as Magnesite, Barringtonite (dihydrate), and Lansfordite (pentahydrate), it is identified by the CAS number 546-93-0, with a molecular formula of MgCO₃ and a molecular weight of 84.31 g/mol. Our high-quality grade, specified at an Assay of MgO: 40% min, comes as an odorless, white friable mass or bulky white powder, practically insoluble in water and insoluble in alcohol, yet offering suitable bioavailability when formulated in supplements. Packaged securely in 25kg net paper bags with PE bags sealed inside, it is ideal for bulk distribution and long-term storage. As the leading bulk Magnesium Carbonate powder supplier in China, ProVita Biotech ensures consistent quality backed by GMP, Kosher, and Halal certifications, and also provides comprehensive OEM solutions for capsules, tablets, and custom formulations to meet the demands of global supplement brands and manufacturers.
Common Magnesium Carbonate Forms and Specifications
Magnesium Carbonate occurs naturally in several distinct mineral forms, each with unique hydration states and applications. The most common anhydrous form is Magnesite (MgCO₃, CAS 546-93-0), while hydrated forms include Barringtonite (MgCO₃·2H₂O, CAS 5146-17-6), Nesquehonite (MgCO₃·3H₂O, CAS 61019-84-1), and Lansfordite (MgCO₃·5H₂O, CAS 20862-73-5). In addition, basic carbonate minerals such as Artinite (Mg₂CO₃(OH)₂·3H₂O, CAS 77018-98-1), Hydromagnesite (Mg₅(CO₃)₄(OH)₂·4H₂O, CAS 12069-69-1), and Dypingite (Mg₅(CO₃)₄(OH)₂·5H₂O, CAS 15138-21-7) also occur in nature. All of these forms are typically colorless or white and valued for their purity and stability.
Commercially, Magnesium Carbonate is produced in different specifications to meet diverse industry needs, including Granular Magnesium Carbonate, Pharma Grade Magnesium Carbonate, Food Grade Magnesium Carbonate, Magnesium Carbonate Light Powder (low bulk density, porous, commonly used in pharmaceuticals and cosmetics), and Magnesium Carbonate Heavy Powder (higher bulk density, compact, suitable for industrial and food applications). These grades are widely used in pharmaceuticals, dietary supplements, food additives, and industrial applications, making Magnesium Carbonate one of the most versatile magnesium ingredients available.
Magnesium Carbonate vs Citrate
Magnesium Carbonate and Magnesium Citrate are two of the most widely used magnesium supplements, but they differ significantly in bioavailability, stability, and applications. Magnesium Citrate is generally considered the most bioavailable and potent form, ideal for fast absorption and supplementation. Magnesium Carbonate, on the other hand, is the most stable, cost-effective, and versatile form, making it widely used in supplements, food fortification, and industrial applications. The best choice depends on your needs: for high absorption and quick results, Magnesium Citrate is better; for stability, formulation flexibility, and lower cost, Magnesium Carbonate is the preferred option.
| Feature | Magnesium Carbonate | Magnesium Citrate |
|---|---|---|
| CAS Number | 546-93-0 | 7779-25-1 |
| Other Names | Magnesite, Barringtonite, Lansfordite | Citric acid magnesium salt |
| Molecular Formula | MgCO₃ | C₆H₆MgO₇ |
| Molecular Weight | 84.31 g/mol | 214.41 g/mol |
| Appearance | Odorless, white friable mass or bulky white powder | White crystalline powder or granules |
| Food Sources | Found naturally in minerals; used as additive/anti-caking agent | Trace in citrus fruits and supplements |
| Specifications | Assay of MgO: 40% min | 98–99% assay (anhydrous or nonahydrate forms) |
| Purity | High, pharma/food grade | High, pharma/food grade |
| Bioavailability | Moderate (requires stomach acid to release magnesium) | High (one of the best absorbed forms) |
| Potency | Lower elemental magnesium per dose | Higher functional absorption efficiency |
| Dosage (typical supplement) | 300–400 mg/day (as magnesium) | 200–400 mg/day (as magnesium) |
| Half-life in body | Moderate, slow release | Shorter, faster absorption |
| Stability | Very stable, long shelf life | Less stable, sensitive to humidity |
| Popularity | Widely used in supplements, food, and industrial | Very popular in supplements for rapid absorption |
| Pricing | Lower cost, wide range depending on grade | Higher cost compared to carbonate |
| Main Benefits | Antacid effect, stable excipient, cost-effective magnesium source | Supports muscle function, energy metabolism, laxative effect, superior absorption |
| Other Notes | Excellent for tablet/capsule OEM formulations | Preferred choice for consumers needing quick magnesium boost |
Magnesium Carbonate Certificate of Analysis(COA)
ProVita Biotech’s Magnesium Carbonate powder is manufactured under strict quality control and tested according to E504(ii) standards to ensure safety and consistency. The COA shows an assay of MgO at 41.3% (specification 40.0–45.0%), confirming high purity. Heavy metals are well below international limits, with Arsenic <3 ppm, Lead <2 ppm, and Mercury <1 ppm, ensuring product safety for dietary supplements. Additional tests confirm excellent quality: Calcium 0.13% (≤1.0%), Acid insoluble matter 0.03% (≤0.05%), Water soluble matter 0.48% (≤1.0%), all meeting specifications. The product is odorless, white powder, practically insoluble in water and ethanol, and packed securely in 25kg net paper bags with PE liners for long-term stability and global distribution. With results fully qualified, meeting GMP, Kosher, and Halal certifications, ProVita Biotech guarantees that its bulk Magnesium Carbonate powder complies with international standards and third-party testing requirements, delivering safe, consistent, and premium-quality raw ingredients for supplement manufacturers, OEM capsule and tablet production, and global distributors.
Application
Dietary Supplements
Magnesium Carbonate is widely used in capsules, tablets, and powders as a stable magnesium source and excipient. It supports bone health, muscle function, and digestive balance, while also serving as an effective antacid for neutralizing stomach acid.
Food & Beverage Industry
As a food additive (E504), Magnesium Carbonate functions as an anti-caking agent, stabilizer, and color retention ingredient. Its ability to absorb moisture makes it essential in powdered blends, baked goods, and beverage formulations.
Industrial Applications
In industry, Magnesium Carbonate is valued for its fire-retardant, insulation, and filler properties. It is commonly used in rubber, ceramics, glass, cosmetics, and personal care products, making it one of the most versatile magnesium compounds for manufacturing.
Magnesium Carbonate Manufacturing Process
ProVita Biotech produces high-purity Magnesium Carbonate powder through a controlled ammonia-soda (double decomposition) process, ensuring stable quality and compliance with international standards. The process begins with brine purification, where soluble salts are treated to remove impurities. Purified brine is then reacted with ammonia and carbon dioxide, forming a precipitate of magnesium carbonate crystals. These crystals are carefully aged, filtered, and washed to remove residual salts and impurities. The wet cake is then dried under controlled conditions, followed by crushing, milling, and sieving to achieve the desired particle size, available as light powder, heavy powder, or granular form. Each batch undergoes assay testing (MgO 40-45%), solubility checks, and heavy metal analysis to guarantee purity and safety.
The finished Magnesium Carbonate powder is odorless, white, and practically insoluble in water and ethanol, making it ideal for pharmaceuticals, dietary supplements, food additives, and industrial applications. Packaged in 25kg net paper bags with PE liners, the product is protected from moisture and contamination during global shipping.
All production follows E504(ii) standard testing methods, with strict compliance to GMP, ISO, Kosher, and Halal certifications. Every batch is further verified by third-party quality testing, ensuring ProVita Biotech delivers international-standard Magnesium Carbonate powder trusted by supplement manufacturers, food producers, and global distributors.
Magnesium Carbonate Benefits
- High-purity magnesium source for dietary supplements in capsules, tablets, and powders.
- Supports muscle and nerve function and helps maintain normal bones and teeth.
- Gentle antacid action – buffers gastric acidity for better GI comfort.
- Food additive E504 – excellent anti-caking agent, flow aid, and stabilizer for dry blends.
- Superior moisture absorption – keeps powdered formulas free-flowing during production and storage.
- Pharma-grade excipient – reliable filler and pH buffer that improves tablet hardness and uniformity.
- Highly stable and inert – long shelf life and minimal reactivity protect sensitive actives.
- Neutral taste and practically insoluble in water – ideal for controlled release in acid environments.
- Customizable particle size – available as light powder, heavy powder, and granular for different processes.
- Cosmetic and coating benefits -whitening, opacity, and mattifying effects for clean aesthetics.
- Industrial versatility – useful as a filler and fire-retardant aid in rubber, ceramics, glass, and plastics.
- Cost-effective and widely available – a dependable option for bulk, food-grade, and pharma-grade use.
Where to buy bulk Magnesium Carbonate?
ProVita Biotech Co., Ltd. is the leading Magnesium Carbonate manufacturer and supplier in China, offering high-quality bulk magnesium carbonate powder at the most competitive magnesium carbonate price. As a trusted Magnesium Carbonate Factory, we produce a wide range of specifications, including Granular Magnesium Carbonate, Pharma Grade Magnesium Carbonate, Food Grade Magnesium Carbonate, Magnesium Carbonate Light Powder, and Magnesium Carbonate Heavy Powder, all tested for purity and safety. We also provide related forms such as magnesium hydrogen carbonate to meet diverse customer requirements.
Every batch is produced under strict GMP standards, backed by Kosher, Halal, and third-party testing certificates, ensuring reliable quality for OEM capsules, tablets, and custom formulations. With professional bulk packaging solutions, international shipment support, and a free sample policy, ProVita Biotech helps global wholesalers, supplement brands, and distributors access premium magnesium carbonate bulk ingredients with confidence. Whether you are looking for magnesium carbonate bulk price for long-term supply or high-purity raw materials for specialized applications, ProVita Biotech is your trusted partner for consistent quality and professional service.
FAQs
Magnesium Carbonate is practically insoluble in water and insoluble in alcohol. Its stability makes it useful as a supplement excipient, food additive (E504), and industrial raw material.
Magnesium Carbonate is good for use in dietary supplements, food fortification, and pharmaceuticals. It supports muscle and nerve function, works as a gentle antacid, and acts as an anti-caking agent in foods.
While Magnesium Carbonate itself is not directly marketed as a sleep aid, it provides a bioavailable source of magnesium, which plays a role in muscle relaxation and nervous system balance, potentially supporting better rest.
Yes, Magnesium Carbonate can help with constipation in some cases because of its mild laxative properties, although Magnesium Citrate is usually considered more effective for digestive support.
No, Magnesium Carbonate and Magnesium Citrate are not the same. Magnesium Citrate has higher bioavailability and faster absorption, while Magnesium Carbonate is more stable, cost-effective, and versatile in supplements and food applications.
No, Magnesium Carbonate is not a strong electrolyte because it is practically insoluble in water. This limited solubility prevents it from fully dissociating into ions, unlike strong electrolytes.
At ProVita Biotech, the typical MOQ for magnesium carbonate bulk orders is 25kg (one standard package). For large-volume wholesale customers, we also provide flexible supply contracts.
Yes, we provide complete OEM solutions, including custom magnesium carbonate capsules, tablets, and blended formulations, tailored for supplement brands and distributors.
As a Magnesium Carbonate Factory in China, ProVita Biotech controls production and quality at the source, offering the most competitive magnesium carbonate bulk price while ensuring consistent purity and compliance.