Magnesium Sulfate (Epsom Salt) is a food-grade versatile magnesium and sulfur source used in food as a firming agent, nutrient supplement and processing aid, and widely in agriculture and medicine.We supply bulk Magnesium Sulfate sourced from leading China manufacturers, available in powder form for global food and beverage producers. Our Magnesium Sulfate is widely used in coagulant, fermentation nutrient, agricultural fertiliser, pharmaceutical laxative and muscle relaxation.
Magnesium Sulfate (MgSO₄) is available as anhydrous, monohydrate, or heptahydrate (Epsom salt) forms. In food it serves as a firming agent for tofu, a yeast nutrient in brewing, a magnesium fortification source and a processing aid.
In agriculture it provides both magnesium and sulfur to plants. Pharmaceutically used as an osmotic laxative, anticonvulsant (IV) and bath soak for muscle recovery.
| Item | Specification |
|---|---|
| Appearance | White crystals or powder |
| Assay (as MgSO₄) | ≥ 99.0% (anhydrous) / ≥ 48.0% (heptahydrate) |
| Magnesium Content | ≥ 9.7% (heptahydrate) |
| pH (5% solution) | 5.0-8.0 |
| Chloride | ≤ 0.015% |
| Heavy Metals (as Pb) | ≤ 10 mg/kg |
| Arsenic | ≤ 3 mg/kg |
| Assay （Mg）% | 10.5-16.4 |
| Loss on drying % | 20 - 29 |
| Loss on drying (anhydrous)≤% | - |
| Chloride≤% | 0.05 |
| Sulfate ≤% | 0.2 |
| Arsenic ≤% | 0.0003 |
| Heavy metal ≤% | 0.002 |
| Calcium ≤% | - |
| Iron≤% | - |
| organic volatile impurities | - |
Our MOQ for bulk food/feed ingredient is generally 500 kg. We also support mixed containers — combine Magnesium Sulfate with other food ingredients in one shipment to save on freight.
We provide free samples (100–500g) for quality testing before you place a bulk order. The buyer covers shipping costs only. Samples are typically dispatched within 2–3 business days.
Standard lead time is 7–15 days after order confirmation and payment. For stock items, delivery can be faster. We will confirm the exact timeline before you place the order.
You will receive the original COA (Certificate of Analysis), COO (Certificate of Origin), MSDS, TDS, and relevant certifications directly from the manufacturer. We guarantee full document authenticity and traceability.
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Whether you're sourcing bulk ingredients or mix container, contact our team for pricing, free samples, and technical support.