Secondary elements

High-Purity Magnesium Sulfate for Fertilizer Use | Reliable China Supplier

  • Type Secondary elements
  • E No. 231-298-2
  • CAS No. 10034-99-8
  • Qty in 20' FCL 27MTs
  • Packaging 25kg bags

🌿 What is Magnesium Sulfate?

Magnesium sulfate (MgSO₄) is an important inorganic salt used extensively in the fertilizer industry. It provides two essential nutrients: magnesium (Mg) and sulfur (S), both of which are vital for plant development and agricultural productivity.

Available mainly as magnesium sulfate heptahydrate (MgSO₄·7H₂O), it is highly water-soluble, making it ideal for various fertilizer formulations.


🧪 Function of Magnesium in Plants

  • Magnesium is the core component of chlorophyll, enabling plants to convert sunlight into energy through photosynthesis.

  • It activates enzymes necessary for carbohydrate, protein, and fat formation.

  • Deficiency symptoms include interveinal chlorosis, stunted growth, and leaf drop.


🌾 Importance of Sulfur

  • Sulfur is a building block for amino acids like cysteine and methionine.

  • It contributes to protein synthesis, enzyme function, and oil formation.

  • Sulfur deficiency results in pale green leaves, delayed maturity, and reduced yield.


🌱 Advantages of Magnesium Sulfate in Fertilizer

✅ Completely water-soluble
✅ Quick nutrient uptake
✅ Suitable for all soil types and crops
✅ Blends easily with most NPK fertilizers
✅ Improves nitrogen and phosphorus efficiency


💧 Application Methods

MethodDescription
Soil ApplicationIdeal for pre-plant or side-dress in fields with low magnesium
Foliar SprayUsed in 1–3% solutions to quickly correct deficiencies
FertigationEfficient in greenhouse or drip irrigation systems for precise nutrient delivery
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🥦 Recommended Crops

Magnesium sulfate is suitable for a wide range of crops:

  • Vegetables: tomato, pepper, potato, spinach

  • Fruits: citrus, banana, grape, apple

  • Cash crops: cotton, coffee, tobacco

  • Grains: wheat, corn, rice


📋 Typical Specifications

Fertilizer Grade Magnesium Sulfate Heptahydrate (MgSO₄·7H₂O):


ParameterSpecification
AppearanceWhite crystalline powder or granules
Purity (MgSO₄·7H₂O)≥ 99.5%
Magnesium (Mg)≥ 9.8%
Sulfur (S)≥ 12.9%
Solubility in Water100%

📦 Packaging Options

Packaging TypeNet Weight
PE/PP Woven Bags25 kg
Kraft Paper Bags25 kg
Jumbo Bags500–1000 kg
Customized OEM BagsAvailable

All packages are moisture-proof and suitable for international shipping.


🏭 About Jiangsu Khonor Chemicals Co., Limited

As a professional chemical exporter, Jiangsu Khonor Chemicals Co., Limited specializes in high-purity fertilizer additives including magnesium sulfate. We serve agricultural customers in Asia, Africa, South America, and Europe.

Our advantages:

  • Stable supply and competitive price

  • Fast delivery with flexible logistics support

  • Professional documentation and export services

  • OEM labeling and custom packaging available

  • Free samples for quality testing


📌 Conclusion

Magnesium sulfate is a cost-effective and efficient solution for correcting magnesium and sulfur deficiencies in agriculture. Its excellent solubility and compatibility with other nutrients make it a staple in both conventional and modern farming.

If you're looking for a trusted supplier of fertilizer-grade magnesium sulfate, Jiangsu Khonor Chemicals Co., Limited is your reliable partner. Contact us today for bulk orders, quotations, and technical support.


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