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White magnesium sulphate crystals and granules

Product Detail

Magnesium Sulphate

MgSO4·7H2O (Epsom salt), MgO 16.5%, Mg 9.8%, S 13%, as 0.1-3 mm crystal or 2-4 mm granular magnesium-sulphur source. Values are typical and confirmed per batch COA.

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What it is / When to use

Magnesium and sulphur source for flush application and blending

Magnesium Sulphate is heptahydrate MgSO4·7H2O (Epsom salt), CAS 10034-99-8, supplying typically MgO 16.5%, Mg 9.8%, and S 13.0% as a water-soluble 0.1-3 mm crystal or 2-4 mm granular grade. RunziChem exports it as a magnesium-sulphur source for flush application, blending, and correcting magnesium deficiency.

  • What it is Magnesium sulphate heptahydrate (Epsom salt), MgSO4·7H2O, CAS 10034-99-8.
  • When to use Use it for flush application and soluble blends, to correct magnesium deficiency, and where a readily dissolving magnesium-plus-sulphur raw material is specified.
  • Honesty note specifications are typical for evaluation; final values are confirmed per batch COA.
MgO 16.5%Magnesium Sulphate
White magnesium sulphate crystals and granules

Specification

Typical specification for buyer evaluation

Formula, CAS, grade, appearance, content, solubility, packaging, and document availability are shown for procurement screening. Final values are confirmed per batch COA.

ProductMagnesium Sulphate (Epsom Salt)
Chemical nameMagnesium sulphate heptahydrate (Epsom salt)
FormulaMgSO4·7H2O
CAS10034-99-8 (heptahydrate)
Grade/PurityHeptahydrate crystal and 2-4 mm granular fertilizer grades
AppearanceWhite crystal (0.1-3 mm) or 2-4 mm granular
Content/Assay (crystal 0.1-3 mm)MgO 16.5%, Mg 9.8%, S 13.0%
Content/Assay (granular 2-4 mm)MgO 16.0%, Mg 9.5%, S 13.0%
SolubilityWater-soluble magnesium-sulphur source
ApplicationsMagnesium and sulphur source for flush application and blending; corrects magnesium deficiency
Packaging25 kg / 50 kg export bags, jumbo bags (1,250 kg), and custom packaging on request
DocumentsTDS, current batch COA, and SDS available on request

Applications

Where Magnesium Sulphate fits

Confirm crop, rate, compatibility, and local label requirements before application.

Magnesium + sulphur supply

Delivers MgO 16.5% magnesium together with S 13.0% sulphate sulphur in one soluble raw material.

Magnesium deficiency

Corrects Mg deficiency symptoms when local agronomy and crop testing confirm the need.

Flush application

The 0.1-3 mm crystal dissolves readily for flush application, foliar sprays, and fertigation after compatibility checks.

Granular for blending

The 2-4 mm granular grade (MgO 16.0%, S 13.0%) suits machine spreading and bulk-blend fertilizer production.

Compare with kieserite

For a higher-analysis, lower-moisture magnesium source at MgO 25-27%, compare Kieserite (MgSO4·H2O).

Batch documents

TDS, COA, and SDS support procurement and formulation review.

Packaging & Documents

Export packaging with batch-level documents

RunziChem supports standard export bags and procurement documents for review before order confirmation.

  • Packaging 25 kg / 50 kg export bags, jumbo bags (1,250 kg), and custom packaging on request.
  • Documents TDS, current batch COA, SDS, packing list, and shipment documents on request.
  • Quality system ISO 9001-certified quality management, with final product values confirmed by batch COA.

Procurement note

Send target grade, annual volume, destination port, packaging preference, and application route. The export team can reply with the current specification, document set, and quotation.

25 kg 50 kg Jumbo bags Custom pack TDS COA SDS

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Buyer FAQ

Magnesium Sulphate questions

What is the difference between the crystal and granular grades of magnesium sulphate?
Both are heptahydrate magnesium sulphate (MgSO4·7H2O, CAS 10034-99-8). The 0.1-3 mm crystal grade is listed at MgO 16.5%, Mg 9.8%, and S 13.0%, favoured for dissolving and blending. The 2-4 mm granular grade is listed at MgO 16.0%, Mg 9.5%, and S 13.0% for machine spreading and bulk blends. Choose by your handling and application route.
Should I choose magnesium sulphate or kieserite as a magnesium source?
Magnesium sulphate heptahydrate carries MgO around 16-16.5% and dissolves readily, making it ideal for flush application, foliar sprays, and soluble blends. Kieserite (MgSO4·H2O) is more concentrated at MgO 25-27% and suits soil-applied and bulk-blend programs. Pick magnesium sulphate when solubility matters and kieserite when a higher-analysis, lower-moisture source is preferred.
How is magnesium sulphate applied and packaged for export?
Magnesium sulphate is used for flush application and blending, correcting magnesium deficiency while supplying S 13% sulphur. RunziChem exports it in 25 kg / 50 kg bags, jumbo bags (1,250 kg), and custom packaging, with TDS, current batch COA, and SDS available on request.
Are the listed MgO, Mg, and sulphur values guaranteed?
No. The figures shown for magnesium sulphate, such as MgO 16.5%, Mg 9.8%, and S 13.0%, are typical values for buyer screening. The current batch certificate of analysis (COA) confirms the final MgO content, sulphur content, moisture, and appearance for the lot you receive.

Request Magnesium Sulphate documents and a quote.

Send annual volume, destination market, packaging, and application route. RunziChem can provide TDS, current batch COA, SDS, and a formal quotation.

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