Magnesium Sulphate Heptahydrate 2-4mm Crystal: High-Purity Supply for Global Industries
Product Overview
Magnesium Sulphate Heptahydrate (MgSO₄·7H₂O, CAS No.: 10034-99-8), widely known as Epsom Salt, is a white, odorless, and fully water-soluble crystalline compound. Our premium 2-4mm Crystal Grade is processed through advanced crystallization and mechanical screening technology to guarantee a uniform particle size distribution between 2.0 mm and 4.0 mm.
Formulated with a main purity of ≥ 99.5%, this specialized medium-to-large crystal grade provides superior physical integrity, enhanced flowability, and low hygroscopic behavior. It is engineered to meet the stringent technical demands of agricultural fertilizer blending, industrial processing, and high-end personal care applications.
Why Choose the 2-4mm Crystal Specification?
Selecting the right particle size is critical for downstream logistics and operational efficiency. The 2-4mm specification offers distinct structural benefits:
Superior Anti-Caking Performance: Fine powders and small crystals frequently suffer from caking and clumping caused by temperature fluctuations and moisture during extended maritime transport. The larger 2-4mm crystal structure significantly reduces total particle contact area, effectively preventing moisture absorption and solid caking in humid environments.
Perfect Fit for Bulk Fertilizer Blending (BB Fertilizer): In modern agriculture, bulk blending requires materials with compatible particle dimensions. The 2-4mm size perfectly aligns with standard granular fertilizers such as Urea, DAP, MAP, and NPK compounds. This prevents physical segregation during transport and guarantees even nutrient distribution during mechanical field spreading.
Dust-Free Handling and Smooth Flow: The solid 2-4mm crystals generate minimal dust during loading, unloading, and mixing. This ensures a cleaner work environment, reduces material loss, and prevents clogging in automated dosing equipment.
Rapid and Complete Water Solubility: Despite its dense crystal form, the compound dissolves completely in water without leaving behind insoluble sludge, insoluble matter, or heavy metal residues.
Primary Industrial and Agricultural Applications
Agriculture & Crop Nutrition
Magnesium (MgO ≥ 16.2%) and Sulfur (S ≥ 12.8%) are essential secondary nutrients for plant growth. Magnesium is the central atom of the chlorophyll molecule, necessary for photosynthesis, carbohydrate transport, and enzymatic activation. Soil application of 2-4mm crystals corrects yellowing leaves, improves crop yield, and enhances fruit quality in cash crops, citrus, tea, and greenhouse vegetables.
Industrial Manufacturing & Processing
In the industrial sector, this chemical serves as a versatile process auxiliary. It is widely used in textile dyeing to stabilize dye baths, in leather tanning to improve softness and density, in paper manufacturing as a pulping agent, and in environmental engineering as a coagulant for industrial wastewater treatment.
Bath Salts & Personal Care Products
The clean, transparent, and uniform 2-4mm crystal structure makes it an ideal raw material for premium bath soak products, foot spas, and body scrubs. It dissolves gracefully in warm water, providing therapeutic muscle relaxation and skin-soothing benefits.
Packaging, Quality Control, and Export Logistics
Every batch of our Magnesium Sulphate Heptahydrate undergoes rigorous laboratory testing, including ICP heavy metal analysis and particle mesh verification.
Standard Packaging: Available in 25kg, 50kg, or 1000kg/1250kg Jumbo PP/PE moisture-proof woven bags.
Customization: Full OEM/ODM services, including private label bag printing, custom palletizing, and anti-UV treatment.
Global Shipping: Standard loading capacity is 25–27 Metric Tons per 20ft container (FCL). Third-party inspection reports (such as SGS or BV) are provided upon request prior to shipment.In addition to containerized cargo, bulk vessel shipment is also widely adopted for large-volume orders to significantly lower unit ocean freight costs. Our reinforced jumbo bag packaging and anti-moisture lining ensure that the 2-4mm crystal structure remains intact and free-flowing during breakbulk loading and discharge.
