Name: magnesium sulphate heptahydrate
Other name:magnesium sulphate hydrate-MgSO4·7H2O
Size: 0.1-1mm Crystal
Purity: 98% (Other 99%, 99.5%)
CAS NO:10034-99-8
Package: 25kg neutral package
Raw Material:Magnesium oxide,sulfuric acid98%,water
Molecular Weight:246.47
Solubility:Soluble in water, slightly soluble in ethanol and glycerol
Notice:Easily weathered in the air
In the global B2B supply chain, sourcing high-purity minerals with consistent quality is the foundation of manufacturing and agricultural success. As a leading chemical and fertilizer manufacturer, we specialize in producing and exporting top-tier magnesium sulphate heptahydrate and various magnesium sulphate hydrate grades. Whether your business requires technical, agricultural, or food-grade formulations, our factory-direct supply chain ensures that you receive premium-grade magnesium and sulfur nutrients tailored to your precise industrial specifications.


Our magnesium sulphate hydrate series is manufactured under stringent quality control protocols, resulting in high water solubility, minimal impurities, and excellent physical stability.
Magnesium Sulphate Heptahydrate (MgSO4 7H2O): Characterized by its brilliant, free-flowing crystalline form. It offers an optimal balance of magnesium (Mg) and sulfur (S), dissolving instantly in water without leaving any residue, making it perfect for liquid blending and fertigation.
Diverse Hydration Grades: Beyond the standard heptahydrate form, we provide tailored magnesium sulphate hydrate variations (including monohydrate and anhydrous forms) to match specific industrial desiccant requirements, feed additives, or compound fertilizer manufacturing processes.
Superior Nutrient Bioavailability: For agricultural applications, our products deliver fast-acting magnesium to correct chlorosis and boost chlorophyll synthesis, driving higher yields in intensive crop production systems.

Procurement professionals look beyond the product; they invest in a secure supply chain. Partnering with us for your magnesium sulphate heptahydrate requirements brings distinct commercial advantages to your business:
Direct Factory Pricing & Cost Predictability: By cutting out international trading intermediaries, we offer competitive bulk pricing on FOB or CIF terms. We work closely with our partners to provide long-term pricing stability, protecting your annual budgets from market volatility.
Scalable Production & Batch Consistency: Equipped with advanced crystallization lines, we guarantee stable, large-scale monthly output. Every single batch undergoes rigorous testing to ensure uniform grain size and stable chemical composition.
Flexible OEM & Custom Packaging: To meet distinct regional market demands, we offer durable, moisture-proof packaging options, including 25kg, 50kg PP/PE bags, and 1000kg/1250kg heavy-duty jumbo bags. Full private label (OEM) printing is available upon request.

Navigating global customs and regulatory frameworks requires flawless documentation and certified product safety.
International Certifications: Our manufacturing facilities are ISO certified. We routinely collaborate with world-renowned testing bodies to provide independent pre-shipment inspection (PSI) reports covering purity, pH value, and heavy metal limits.
Strategic Shipping & Fast Dispatch: Located adjacent to major shipping ports, our logistics division ensures streamlined customs declaration, rapid container loading, and efficient vessel booking, significantly reducing lead times for your urgent inventory cycles.

Our magnesium sulphate heptahydrate is trusted across multiple sectors worldwide:
Agriculture & Horticulture: Used as a premium water-soluble fertilizer for magnesium-hungry crops like citrus, tomatoes, peppers, and potatoes.
Industrial & Chemical Processing: Utilized in the formulation of detergents, leather tanning, textile dyeing fixation, and as a crucial component in magnesium-based construction boards.
Animal Feed Grade: Serving as a vital nutritional supplement to prevent magnesium deficiency (grass tetany) in ruminants and poultry.


Request Your Bulk Quote & Samples Today
Securing a resilient chemical supply chain is a critical asset in today’s shifting global economy. If you are looking for a trustworthy, large-scale manufacturer of magnesium sulphate hydrate or wish to secure the latest market quotation for magnesium sulphate heptahydrate, contact our international B2B sales experts today. Fill out the inquiry form below, and our team will provide a tailored commercial quote and technical data sheet (TDS) within 24 hours!