Looking to source premium magnesium gluconate powder in bulk?
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What Is Magnesium Gluconate?
Magnesium gluconate is the magnesium salt of gluconic acid , commonly used as a dietary supplement to maintain optimal magnesium levels. It’s prized for its high bioavailability, gentle absorption, and minimal gastrointestinal discomfort, making it ideal for food, beverage, and nutraceutical applications.
Manufacturing Process of Magnesium Gluconate Powder
1. Fermentation – Glucose undergoes microbial fermentation to produce gluconic acid.
2. Neutralization – Gluconic acid is neutralized with magnesium oxide or magnesium carbonate to form magnesium gluconate.
3. Purification – The solution is filtered to remove impurities.
4. Crystallization & Drying – The purified magnesium gluconate is crystallized, then dried into a fine,
5. Milling & Sieving – The dried material is milled to uniform particle size suitable for supplement formulations.
6. Quality Testing – Final powder undergoes USP specification testing for purity, heavy metals, microbial load, and assay.

Magnesium Gluconate Powder Specification
| Item | Specification |
| Product Name | Magnesium Gluconate Powder |
| Grade | USP / Food Grade |
| CAS No. | 3632-91-5 |
| Molecular Formula | C₁₂H₂₂MgO₁₄ |
| Molecular Weight | 414.6 |
| Appearance | White to off-white crystalline powder |
| Assay (Mg content) | 5.4% – 6.5% (as Mg) |
| Assay (Magnesium Gluconate) | ≥ 97.0% |
| Loss on Drying | ≤ 10.0% |
| pH (10% solution) | 6.0 – 7.8 |
| Solubility | Freely soluble in water |
| Heavy Metals (Pb) | ≤ 10 ppm |
| Arsenic (As) | ≤ 1 ppm |
| Cadmium (Cd) | ≤ 1 ppm |
| Mercury (Hg) | ≤ 0.1 ppm |
| Microbial Limit: Total Plate Count | ≤ 1000 cfu/g |
| Yeast & Mold | ≤ 100 cfu/g |
| E. coli / Salmonella | Negative |
| Shelf Life | 24 months (sealed, cool, dry storage) |
| Packaging | 25KG/drum (fiber drum with PE liner) |
| Storage | Keep in a tightly sealed container, away from light, heat, and moisture |
Our process ensures USP Food Grade quality that meets global standards for human consumption. High-quality USP food grade magnesium gluconate powder in bulk. Ideal for supplement, food, and beverage formulations. MOQ 25KG. Global shipping.
What We Provide to Distributors and Importers
As a bulk magnesium gluconate powder supplier, we offer:
USP Food Grade certified magnesium gluconate
MOQ from 25 KG per drum (fiber drum or PE-lined bag)
Consistent batch quality with full COA, MSDS, and third-party test reports
Custom packaging, labeling, and private label support
Regulatory and export documentation (FDA, ISO, Halal, Kosher, etc.)
Worldwide logistics support with on-time delivery
We support brands, contract manufacturers, and distributors with competitive pricing and flexible order quantities.
Contact us today for quotes, samples, and COA— and get a reliable partsupplement, nutraceutical, and food manufacturing business.
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