OUR FERTILIZERS
Magnesium Sulphate Heptahydrate 1-3mm
| Classification | Magnesium Fertilizer |
|---|---|
| CAS No. | 10034-99-8 |
| EINECS No. | 242-691-3 |
| MF | MgSO₄·7H₂O |
| Appearance | White Crystal |
| Other Name | Magnesium Sulfate |
| Application | Fertilizer material |
| Brand Name | FT Fert |
| Packaging | In 25kg, 50kg, 1000kg, 1250kg Bag And OEM Color Bag |
PRODUCT DETAILS
Product Introduction
Magnesium Sulphate Heptahydrate, also known as Epsom Salt, is a fully water-soluble fertilizer with the chemical formula MgSO₄·7H₂O. It contains 9.8% magnesium (Mg) and 12.9% sulfur (S), both of which are essential secondary nutrients for plant growth.
Magnesium plays a central role in chlorophyll formation and photosynthesis, while sulfur aids in enzyme activation, protein synthesis, and improving crop quality. This product is ideal for use in fertigation, foliar spray, and soil application across a wide range of crops.
Key Benefits
- Corrects magnesium and sulfur deficiencies effectively
- Improves leaf color, photosynthesis, and overall plant vigor
- Enhances nutrient absorption, especially nitrogen and phosphorus
- Promotes fruit development, oil content, and taste quality
- Compatible with most NPK and micronutrient fertilizers
- 100% water-soluble, fast-dissolving – no residue
Product Specifications
| ITEM | STANDARD | STANDARD | STANDARD |
|---|---|---|---|
| Appearance | White crystal | ||
| Purity | ≥99% | ≥99.5% | ≥99.5% |
| MgSO4 | ≥47.86% | ≥48.59% | ≥48.59% |
| MgO | ≥16% | ≥16.24% | ≥16.24% |
| Mg | ≥9.65% | ≥9.8% | ≥9.8% |
| S | ≥11.8% | ≥12% | ≥12% |
| Cl | ≤0.30% | ≤0.014% | ≤0.014% |
| Fe | 50ppm max | 15ppm max | 3ppm max |
| As | -- | 2ppm max | 2ppm max |
| Cd | -- | 2ppm max | 2ppm max |
| Pb | -- | 6ppm max | 6ppm max |
| Insoluble in water | ≤0.10% | ≤0.010% | ≤0.010% |
| PH(5W/V%Sol) | |||
| Size | 0.1-1mm | 0.1-0.5/ 1-3/ 2-4/ 4-7mm | 0.1-1mm |
Applications
- Used in vegetables, fruit trees, flowers, tobacco, oilseeds, and grains
- Recommended for soil application, drip irrigation, or foliar spray
- Especially suitable for magnesium-deficient soils or high-yield crops
- Commonly applied at early growth stages and fruiting stages
SEO Keywords
magnesium sulphate heptahydrate fertilizer, MgSO₄·7H₂O agricultural grade, Epsom salt for plants, magnesium fertilizer for crops, magnesium sulfate foliar spray, sulfur and magnesium fertilizer, buy magnesium sulfate heptahydrate
Transportation

Related products
Looking for a Reliable Fertilizer Supplier in China?
Contact us now to get latest prices, specifications and shipping solutions.








