Magnesium Citrate Nonahydrate Manufacturer & Supplier
CAS No.: 153531-96-5
Molecular Formula: Mg3(C6H5O7)2·9H2O
Grade: Food Grade / USP / FCC
Main Characteristics: Superior Water Solubility, Fine Crystalline Powder
1. Product Overview
Magnesium Citrate Nonahydrate is a hydrated form of magnesium citrate containing nine molecules of water. In the B2B ingredient market, the Nonahydrate grade is highly valued for its exceptional solubility and pleasant taste profile compared to other magnesium salts.
At Xi’an SR Bio-Engineering, we specialize in producing high-purity Magnesium Citrate Nonahydrate that meets strict USP and Food Grade standards. It is an ideal mineral source for liquid formulations, effervescent tablets, and functional beverages where clarity and rapid dissolution are critical.
2. Technical Comparison: Anhydrous vs. Nonahydrate
Choosing the right grade depends on your final dosage form. Use the table below to determine which specification fits your formulation:
| Feature | Magnesium Citrate Anhydrous | Magnesium Citrate Nonahydrate |
| CAS No. | 3344-70-9 | 153531-96-5 |
| Elemental Mg Content | Higher (~15.5%) | Lower (~12.0%) |
| Water Content | ≤ 2.0% | 20.0% – 26.0% |
| Solubility Speed | Moderate | Rapid / Instant |
| Best Application | Capsules, High-potency Tablets | Syrups, Drink Mixes, Effervescents |
| Formulation Benefit | Small footprint for high-dose pills | Superior clarity and clean mouthfeel |
3. Technical Specifications (COA)
| Item | Specification (Nonahydrate) | Result |
| Appearance | White crystalline powder | Conforms |
| Assay (Mg, on dried basis) | 14.5% – 16.4% | 15.2% |
| Loss on Drying | 20.0% – 26.0% | 23.5% |
| Solubility | Soluble in water, rapidly dissolves | Conforms |
| Lead (Pb) | ≤ 1.0 ppm | < 0.5 ppm |
| Arsenic (As) | ≤ 1.0 ppm | < 0.2 ppm |
| Cadmium (Cd) | ≤ 1.0 ppm | < 0.1 ppm |
| Mercury (Hg) | ≤ 0.1 ppm | < 0.01 ppm |
| Mesh Size | 40-80 mesh | 60 mesh |
4. Key Advantages for Manufacturers
Exceptional Solubility
The nine water molecules in the crystal lattice significantly enhance the material’s affinity for water. This makes it the premier choice for liquid supplements and powdered drink mixes where “instant” dissolution is a key selling point.
Gentle Flavor Profile
Compared to magnesium oxide or sulfate, our Magnesium Citrate Nonahydrate has a cleaner, less metallic taste, reducing the need for heavy flavoring agents in your final product formulation.
5. Industrial Applications
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Effervescent Formulations: Its crystalline structure and reaction properties make it ideal for effervescent tablets and granules.
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Functional Beverages: Used in sports drinks and mineral-fortified waters for rapid magnesium replenishment.
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Food Fortification: Applied as an acidity regulator and mineral fortifier in dairy products and desserts.
6. Packaging & Bulk Supply
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Packaging: 25kg/Drum with double PE food-grade inner bags. Small trial packaging available.
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MOQ: 1kg (Flexible for R&D testing and small-batch production).
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Storage: Store in a cool, dry area. Keep container tightly closed to prevent moisture absorption.
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Sample Service: 50g-100g free samples available for lab testing and evaluation.
Shipping & Packing Information
OEM SERVICE
We offer all-inclusive product development from consultation to delivery.
We make product proposals based on the customer’s requirements, from small to large lots.
