Key Properties of Magnesium Hydroxide
| Product Name: | Magnesium Hydroxide |
| Synonyms: | Magnesium dihydroxide |
| CAS No: | 1309-42-8 |
| Chemical Formula: | Mg(OH)₂ |
| Grade: | IP/BP/USP |
| Appearance: | White powder or fine crystals |
| Molar Mass: | 58.32 g/mol |
| Solubility: | Soluble in dilute acids, insoluble in water and ethanol |
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Magnesium Hydroxide Manufacturing process
Before starting the process operation, ensure the cleanliness of the equipment, confirm the availability of utilities, and verify that all raw materials and packing materials are available.
Charge the magnesium chloride solution into the reactor and gradually add sodium hydroxide solution under controlled stirring. Maintain the reaction temperature at 20–30°C to precipitate Magnesium Hydroxide.
The product is filtered using a centrifuge and washed with deionized water to remove impurities. The wet cake is dried in a vacuum dryer at 50–60°C for 360-480 minutes. The dried product is then milled to achieve uniform particle size and sieved through the specified mesh for consistency.
Pack Magnesium Hydroxide in a clear poly bag and twist the mouth of the bag. Secure it with a PVC strip. Place this bag inside another poly bag, twist its mouth, and secure it with a PVC strip. Finally, place the sealed bag in an HDPE container. Store Magnesium Hydroxide in a tightly closed, light-resistant container at a temperature below 30°C.
Magnesium Hydroxide Applications
Therapeutic Uses
Antacid for Acid Indigestion and Heartburn
Laxative for Constipation
Magnesium Supplement
Industrial Uses
Pharmaceutical Formulations
R&D and Formulation Development
Magnesium Hydroxide Specifications
| Sr.No. | Test | Specification |
|---|---|---|
| 1 | Appearance | A fine, white powder, odorless |
| 2 | Solubility | Soluble in dilute acids, insoluble in water and ethanol |
| 3 | Identification | The resulting solution gives reaction A of magnesium salts |
| 4 | Carbonate | Not more than a slight effervescence should be observed |
| 5 | Sulphate | Not more than 0.5% |
| 6 | Calcium | Not more than 1.5% |
| 7 | Iron | Not more than 0.08% |
| 8 | Chloride | Not more than 0.1% |
| 9 | Soluble Salt | Not more than 10 mg |
| 10 | Substance Insoluble in Acetic Acid | Not more than 5 mg |
| 11 | Lead | Not more than 1.5 ppm |
| 12 | Arsenic | Not more than 4 ppm |
| 13 | Heavy Metals | Not more than 40 ppm |
| 14 | Loss on Ignition | Limit 30.0% to 33.0% |
| 15 | Loss on Drying | Not more than 2.0% |
| 16 | Microbial Contamination | Escherichia coli: Absent TAMC: Not more than 1000 cfu/gm TYMC: Not more than 100 cfu/gm |
| 17 | Assay | 95.0% to 100.5% (Dried basis) |
| 18 | Particle Size | 95% Minimum passes on 325 mesh |
Magnesium Hydroxide Packing and Storage condition
Pack Magnesium Hydroxide in a clear poly bag and twist the mouth of the bag. Secure it with a PVC strip. Place this bag inside another poly bag, twist its mouth, and secure it with a PVC strip. Finally, place the sealed bag in an HDPE container. Store Magnesium Hydroxide in a tightly closed, light-resistant container at a temperature below 30°C.
Why Choose Chemignition for
Magnesium Hydroxide Supply?
Quality Assurance
Grade Compliance
Magnesium Hydroxide is manufactured in adherence to stringent global pharmaceutical standards.
In-House Quality Control
Each batch undergoes rigorous testing for purity, stability, and efficacy.
Regulatory Approvals
Certified for export and compliant with international regulatory requirements.
Large-Scale Manufacturing and Export
Grade Compliance
Magnesium Hydroxide is manufactured in adherence to stringent global pharmaceutical standards.
In-House Quality Control
Each batch undergoes rigorous testing for purity, stability, and efficacy.
Regulatory Approvals
Certified for export and compliant with international regulatory requirements.
