New High-Purity MgSO4 Heptahydrate Grade for Export
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- publisher
- MgSO4 Group Limited
- Issue Time
- Aug 19,2026
Summary
MgSO4 launches a 99.5% heptahydrate grade with consistent purity for export blenders.

A New 99.5% Heptahydrate Grade
MgSO4 Group Limited has released an upgraded magnesium sulphate heptahydrate 99.5 grade for the export market. Built on the same crystallisation line that has served our customers since 2007, the new lot targets blenders and brands that specify tight purity and low insoluble matter.
What High Purity Magnesium Sulfate Means
For a high purity magnesium sulfate, the difference is in the details: lower chloride, tighter heavy-metal ceilings and uniform crystal size. These factors protect both equipment and end-product consistency in fertilizer and feed applications.
From an Established Epsom Salt Manufacturer
As a long-standing epsom salt manufacturer, we treat MgSO4 heptahydrate and Epsom salt as the same molecule delivered to different specs. The new grade simply raises the bar on what export customers already trust.
MgSO4 heptahydrate 99.5% crystal from MgSO4 Group Limited — view product: https://www.mgso4.com/pid18135921/Magnesium-Sulphate-Heptahydrate-Epsom-Salt-99-5-1-3-mm-crystal.htm
Specifications Buyers Can Verify
Each lot of MgSO4 heptahydrate ships with a certificate of analysis covering MgSO4·7H2O content, moisture, insoluble residue and heavy metals. Third-party inspection is accepted at the loading port on request.
Forms for Every Application
The grade is offered in powder and crystal forms. Agricultural magnesium sulfate users typically prefer granular or crystal for blend behaviour, while industrial users may choose fine powder for rapid dissolution.
Why Agricultural Magnesium Sulfate Needs Consistency
agricultural magnesium sulfate is applied where soil magnesium is deficient, so batch-to-batch uniformity matters more than headline number. Our crystallisation control keeps particle size and dissolution predictable.
Packaging and Shipment
Standard 25 kg and 50 kg woven bags, with jumbo options for full containers. As a direct magnesium sulfate supplier we coordinate FOB and CIF terms from Dalian and Tianjin.
Ordering the New Grade
Existing customers can request a specification sheet and sample of the 99.5% heptahydrate grade. New enquiries are matched to the right crystal size and packing for the destination market.

MgSO4 heptahydrate crystal grades for export
Request the specification sheet and a free sample of our high purity magnesium sulfate today.
