Is anhydrous Magnesium Sulfate the same as Epsom salt?

No. Anhydrous Magnesium Sulfate is MgSO4 without the seven waters of crystallization. Epsom salt normally means Magnesium Sulfate heptahydrate, MgSO4·7H2O. Specify the hydrate state and assay basis because the two materials have different composition, bulk density and water-absorption behavior.

Which grade controls matter for anhydrous Magnesium Sulfate?

Define assay on the stated basis, loss on drying or water, insoluble matter, chloride, iron and relevant metals, pH, particle-size distribution and appearance. Food, pharmaceutical, drying-agent and general industrial uses require different standards, so name the applicable grade or monograph rather than relying on CAS alone.

How should anhydrous Magnesium Sulfate be packaged for bulk supply?

Use moisture-resistant, well-sealed packaging with an appropriate inner liner, net weight and pallet configuration. State the application, quantity and destination, and agree sampling, caking and particle-size criteria because moisture pickup during storage can change free flow and effective drying capacity.

Anhydrous Magnesium Sulfate CAS 7487-88-9

Magnesium Sulfate , CAS 7487-88-9 and EC 231-298-2 , is the anhydrous salt MgSO4 with molecular weight 120.37 g/mol. It must not be specified interchangeably with magnesium sulfate monohydrate or heptahydrate. Purchasing controls should identify hydration state, assay basis, loss on drying or water, insoluble matter, chloride, iron, heavy metals, pH and particle size according to the intended use.

CAS: 7487-88-9
Synonyms: Magnesium sulfate, Anhydrous magnesium sulfate, Magnesium sulphate
Einecs: 231-298-2
Molecular Formula: MgSO₄
Grade: Confirm hydration state or concentration, assay basis, key ions, insolubles or trace metals, physical form and intended-use documents against the current COA or TDS.
Package: State required form, quantity and destination; confirm the current bag or container, liner, net weight, moisture or corrosion controls, palletization and transport requirements before quotation.

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Product Description

1 Identity and specification

2 Quality controls for purchasing

3 Applications and grade selection

4 Storage and handling

5 Documentation and quotation details

Identity and specification

Item	Verified purchasing information
Product	Anhydrous Magnesium Sulfate
CAS / EC	7487-88-9 / 231-298-2
Formula / molecular weight	MgSO4 / 120.37 g/mol
Critical selection point	Anhydrous grade, not monohydrate or heptahydrate

Anhydrous Magnesium Sulfate has formula MgSO4. Hydrated grades carry different formulas, molecular weights and performance. The quotation, label, COA and incoming test plan should all state the required hydration state rather than using only the general name magnesium sulfate.

Quality controls for purchasing

Specify assay on an anhydrous or as-is basis and define the water or loss-on-drying method.
Set application-based limits for insoluble matter, chloride, iron, calcium, heavy metals and pH.
Define particle-size distribution, bulk density and caking behavior when dissolution or dry blending is important.

Applications and grade selection

Anhydrous Magnesium Sulfate is used in industrial processing, drying, formulation and as a magnesium source where the approved grade is suitable. Food, feed, pharmaceutical, agricultural and technical uses require different specifications and documentation; one grade should not be assumed to cover every application.

Storage and handling

The anhydrous salt readily takes up moisture. Keep bags or drums sealed with an effective moisture barrier, use dry handling equipment and protect opened packages from humid air. Follow the SDS and site rules for dust control and manual handling.

Documentation and quotation details

State hydration state, application, assay basis, water limit, impurity profile, particle size, quantity, packaging, destination and required certifications. Review the lot COA against the agreed specification before shipment or release.

FAQ - Technical & Supply Chain

Q:
Is anhydrous Magnesium Sulfate the same as Epsom salt?

A: No. Anhydrous Magnesium Sulfate is MgSO4 without the seven waters of crystallization. Epsom salt normally means Magnesium Sulfate heptahydrate, MgSO4·7H2O. Specify the hydrate state and assay basis because the two materials have different composition, bulk density and water-absorption behavior.
Q:
Which grade controls matter for anhydrous Magnesium Sulfate?

A: Define assay on the stated basis, loss on drying or water, insoluble matter, chloride, iron and relevant metals, pH, particle-size distribution and appearance. Food, pharmaceutical, drying-agent and general industrial uses require different standards, so name the applicable grade or monograph rather than relying on CAS alone.
Q:
How should anhydrous Magnesium Sulfate be packaged for bulk supply?

A: Use moisture-resistant, well-sealed packaging with an appropriate inner liner, net weight and pallet configuration. State the application, quantity and destination, and agree sampling, caking and particle-size criteria because moisture pickup during storage can change free flow and effective drying capacity.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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