Product Details
| Product Name: Magnesium citrate tribasic nonahydrate | CAS No.: 153531-96-5 |
| EC-No.: 222-093-9 | Min. Order: 1ton |
| Purity: 99% | Supply Ability: 1000T/M |
| Release date: 2025/11/04 |
Product Name: Magnesium Citrate Tribasic Nonahydrate
CAS Number: 153531-96-5
Molecular Formula: Mg₃(C₆H₅O₇)₂ · 9H₂O
Molecular Weight: 613.25 g/mol
Synonyms: Trimagnesium dicitrate nonahydrate, Magnesium citrate 3Mg
1. Product Description
Magnesium Citrate Tribasic Nonahydrate is a white crystalline powder or granules, slightly soluble in water, practically insoluble in ethanol. It is used as a magnesium source in food, dietary supplements, pharmaceuticals, and as a reagent in industrial and laboratory applications.
2. Applications
| Application Area | Description |
|---|---|
| Food & Beverage | Nutritional supplement, magnesium fortification, pH buffer in beverages. |
| Pharmaceuticals | Dietary magnesium supplement, laxative formulations. |
| Industrial | Laboratory reagent, buffer, magnesium source in chemical reactions. |
3. Specifications
Food Grade
| Test Item | Specification | Method / Standard |
|---|---|---|
| Appearance | White crystalline powder | Visual |
| Assay (as Mg) | 14.5 – 16.4 % | Titration / ICP |
| pH (1% solution) | 7.0 – 9.0 | pH meter |
| Loss on Drying | 26.0 – 30.0 % | 105 °C, 4h |
| Heavy Metals (Pb) | ≤ 10 ppm | ICP-MS |
| Arsenic (As) | ≤ 3 ppm | ICP-MS |
| Residue on Ignition | ≤ 0.1 % | Gravimetric |
| Microbial Limits | Total plate count ≤ 1000 CFU/g | ISO 4833 |
| Salmonella | Negative | ISO 6579 |
| E. coli | Negative | ISO 16649 |
Industrial Grade
| Test Item | Specification | Method / Standard |
|---|---|---|
| Appearance | White crystalline powder | Visual |
| Assay (as Mg) | ≥ 14.0 % | Titration / ICP |
| pH (1% solution) | 6.5 – 9.5 | pH meter |
| Loss on Drying | 25 – 31 % | 105 °C, 4h |
| Heavy Metals (Pb) | ≤ 50 ppm | ICP-MS |
| Arsenic (As) | ≤ 5 ppm | ICP-MS |
| Residue on Ignition | ≤ 0.5 % | Gravimetric |
| Other Impurities | Conforms to specification | Visual / Lab Test |
4. Physical Properties
| Property | Value |
|---|---|
| Solubility | Slightly soluble in water, insoluble in ethanol |
| Density | 1.2 – 1.4 g/cm³ |
| Color | White crystalline powder |
| Odor | Odorless |
| Stability | Stable under normal storage conditions; hygroscopic |
5. Storage & Handling
Store in a cool, dry, well-ventilated area, away from moisture and acids.
Keep containers tightly closed.
Shelf life: 2 years under recommended storage.
6. Safety Information
Non-toxic at recommended doses (food grade).
Handle industrial grade with appropriate PPE (gloves, dust mask, goggles).
Avoid inhalation of dust and prolonged skin contact.
Summary:
Food grade: complies with FCC / GB 2760 standards, suitable for dietary supplements and food fortification.
Industrial grade: suitable for laboratory and industrial applications, purity and heavy metal limits are less strict.
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China- Since: 2025-04-07
- Address: C-309, No. 12 Yuzhou S. Rd, Haizhou, Lianyungang, Jiangsu, China