Key Properties of Magnesium Sulphate
| Product Name: | Magnesium Sulphate |
| Synonyms: | Magnesium Sulphate Heptahydrate |
| CAS No: | 10034-99-8 |
| Chemical Formula: | MgSO₄·7H₂O |
| Grade: | IP / BP / USP |
| Appearance: | Colourless crystals or a white, crystalline powder. |
| Molar Mass: | 246.5 g/mol |
| Solubility: | Freely soluble in water, slightly soluble in alcohol |
| Melting Point: | 1124°C (anhydrous form) |
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WhatsappMagnesium Sulphate Manufacturing process
Step 1: Raw Material Selection
- High-purity magnesium oxide (MgO) or magnesium carbonate (MgCO₃) and sulfuric acid (H₂SO₄) are used.
- Raw materials undergo strict quality checks for purity.
Step 2: Chemical Reaction & Processing
- Magnesium oxide/carbonate reacts with sulfuric acid to form Magnesium Sulphate solution.
- The solution is filtered and refined to remove impurities.
Step 3: Crystallization & Drying
- The solution is evaporated, crystallized, and dried to achieve the required purity.
Step 4: Quality Control & Testing
- The product is tested for assay, solubility, moisture content, and pH as per IP/BP/USP standards.
Step 5: Packaging & Storage
- Packed in HDPE bags or fiber drums to prevent contamination.
- Stored in a cool, dry place to maintain stability.
Magnesium Sulphate Applications
Pharmaceutical Applications
Magnesium Source in Pharmaceutical Formulations
Suitable pharmaceutical grades of Magnesium Sulphate may be used as a source of magnesium in pharmaceutical formulations where controlled magnesium content is required.
Parenteral and Electrolyte Formulations
Appropriate pharmaceutical grades of Magnesium Sulphate are used in certain parenteral and electrolyte preparations as a source of magnesium. Such applications must comply with applicable pharmacopoeial, formulation and sterile-manufacturing requirements.
Pharmaceutical Processing
Magnesium Sulphate may be used in selected pharmaceutical manufacturing and formulation processes where magnesium or sulphate ions are required.
Topical and Bath Preparations
Suitable grades of Magnesium Sulphate may be incorporated into selected topical, soaking and bath preparations. Magnesium Sulphate Heptahydrate is commonly known as Epsom Salt.
Food and Nutritional Applications
Magnesium Source
Food-grade Magnesium Sulphate may be used as a magnesium source in selected food, beverage and nutritional formulations, subject to applicable food regulations.
Food Processing
It may be used in selected food-processing applications where magnesium ions are required for the formulation or manufacturing process.
Brewing and Beverage Processing
Suitable food-grade Magnesium Sulphate may be used in brewing and other beverage-processing applications to adjust the mineral composition of process water.
Agriculture and Fertilizer Applications
Magnesium and Sulphur Fertilizer
Magnesium Sulphate is widely used in agriculture as a source of two essential plant nutrients: magnesium and Sulphur.
Correction of Magnesium Deficiency
Agricultural grades may be used to correct or prevent magnesium deficiency in suitable crops and soils as part of an appropriate nutrient-management program.
Fertigation Applications
Water-soluble grades of Magnesium Sulphate may be incorporated into fertigation systems to provide magnesium and Sulphur through irrigation water.
Foliar Applications
Suitable agricultural grades may be used in foliar nutrient formulations where rapid delivery of magnesium to plants is required.
Horticulture and Greenhouse Cultivation
Magnesium Sulphate is used in horticultural, greenhouse and hydroponic nutrient programs as a source of soluble magnesium and Sulphur.
Personal Care and Cosmetic Applications
Bath Salt Formulations
Suitable grades of Magnesium Sulphate are widely used in bath salts, foot-soak products and related personal-care formulations.
Cosmetic Formulations
Magnesium Sulphate may be used in selected cosmetic and personal-care formulations where its physical or formulation properties are beneficial.
Spa and Wellness Products
Epsom Salt is commonly incorporated into spa, soaking and wellness products. Cosmetic-grade material should be selected where required for the intended formulation.
Chemical and Industrial Applications
Magnesium and Sulphate Source
Magnesium Sulphate serves as a source of magnesium and sulphate ions in selected chemical manufacturing and industrial processes.
Chemical Synthesis
It may be used as a raw material or intermediate in the manufacture of selected magnesium compounds and specialty chemicals.
Textile Processing
Magnesium Sulphate may be used in selected textile-processing, dyeing and finishing operations depending on the specific manufacturing process.
Pulp and Paper Processing
It may also be used in selected pulp, paper and industrial processing applications where magnesium salts provide the required process functionality.
Water Treatment and Process Applications
Water Conditioning
Magnesium Sulphate may be used in selected water-conditioning and process-water applications where adjustment of magnesium concentration or mineral composition is required.
Industrial Process Water
It may also serve as a magnesium source in specific industrial water systems, depending on process requirements.
Laboratory and Research Applications
Laboratory Reagent
Suitable reagent grades of Magnesium Sulphate are used in chemical analysis, research, solution preparation and other laboratory procedures.
Drying Agent in Organic Chemistry
Anhydrous Magnesium Sulphate is widely used as a drying agent in organic chemistry laboratories to remove residual water from organic solutions.
Biochemical and Research Applications
Magnesium Sulphate may be used as a source of magnesium ions in selected biochemical, microbiological and research applications where magnesium is required.
Magnesium Sulphate Specifications
| Sr. No. | Test | Specification |
|---|---|---|
| 1 | Description | White, crystalline powder or granules |
| 2 | Assay (Purity) | Not less than 99.0% |
| 3 | Loss on Drying | Not more than 1.0% |
| 4 | pH (5% solution) | 5.0 – 7.0 |
| 5 | Solubility | Freely soluble in water |
| 6 | Chloride (Cl⁻) | Not more than 100 ppm |
| 7 | Sulphate (SO₄²⁻) | Not less than 48.5% |
| 8 | Heavy Metals | Not more than 10 ppm |
| 9 | Iron (Fe) | Not more than 5 ppm |
| 10 | Lead (Pb) | Not more than 3 ppm |
| 11 | Arsenic (As) | Not more than 2 ppm |
| 12 | Residue on Ignition | Not more than 0.05% |
Magnesium Sulphate IP Specification
Download Magnesium Sulphate IP Specification
| Sr. No. | Test | Specification |
|---|---|---|
| 1 | Description | Colourless crystals or a white, crystalline powder. |
| 2 | Solubility | Freely soluble in water, practically insoluble in ethanol (96 per cent) |
| 3 | Identification by Sulphate | It gives reaction of Sulphate. |
| 4 | Identification by Magnesium | It gives reaction of Magnesium. |
| 5 | Appearance of Solution | Solution is clear and colourless. |
| 6 | Acidity or Alkalinity | Passes test |
| 7 | Arsenic | Not more than 2 ppm |
| 8 | Heavy Metals | Not more than 10 ppm |
| 9 | Iron | Not more than 200 ppm |
| 10 | Chlorides | Not more than 300 ppm |
| 11 | Loss on Drying | 48.00% to 52.00% |
| 12 | Assay (On dried basis) | Not less than 99.00% and not more than 100.50% |
Magnesium Sulphate BP Specification
Download Magnesium Sulphate BP Specification
| Sr. No. | Test | Specification |
|---|---|---|
| 1 | Description | White or almost white, crystalline powder or brilliant, colourless crystals. |
| 2 | Solubility | Freely soluble in water, very soluble in boiling water, practically insoluble in ethanol (96 per cent). |
| 3 | Identification by Sulphate | It gives reaction of Sulphate. |
| 4 | Identification by Magnesium | It gives reaction of Magnesium. |
| 5 | Appearance of Solution | Solution is clear and colourless. |
| 6 | Acidity or Alkalinity | Passes test |
| 7 | Chlorides | Not more than 300 ppm |
| 8 | Iron | Not more than 20 ppm |
| 9 | Loss on Drying | 48.0% to 52.0% |
| 10 | Assay (On dried substance) | Not less than 99.00% and not more than 100.50% |
Magnesium Sulphate USP Specification
Download Magnesium Sulphate USP Specification
| Sr. No. | Test | Specification |
|---|---|---|
| 1 | Description | Colourless crystals or a white, crystalline powder. |
| 2 | Solubility | Freely soluble in water, practically insoluble in ethanol (96 per cent) |
| 3 | Identification by Sulphate | It gives reaction of Sulphate. |
| 4 | Identification by Magnesium | It gives reaction of Magnesium. |
| 5 | Chloride | Not more than 0.014% |
| 6 | Iron | Not more than 20 ppm |
| 7 | Selenium | Not more than 30 ppm |
| 8 | pH | 5.0 to 9.2 |
| 9 | Loss on Ignition | 40.0% to 52.0% |
| 10 | Assay (On dried basis) | Not less than 98.00% and not more than 102.00% |
Note: Additional test to be carried out as per customer requirements.
Magnesium Sulphate Packing and Storage condition
Packing:
- 25 kg / 50 kg HDPE bags with inner LDPE liner for moisture protection.
- Fiber drums for high-purity grades.
- Bulk packaging in jumbo bags (500 kg – 1000 kg) available upon request.
Storage Conditions:
- Store in a cool, dry, and well-ventilated area away from direct sunlight
Why Choose Chemignition for
Magnesium Sulphate Supply?
Quality Assurance
Grade Compliance
Magnesium Sulphate 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 Sulphate 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.
