Molekula
Magnesium sulfate SG anhydrous
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Magnesium sulfate anhydrous is a white, crystalline powder used in chemical synthesis, pharmaceuticals, and agricultural applications. It serves as a source of magnesium ions and a drying agent. Industrially, it goes into fertilizer manufacture, textile weighting, dyeing, printing and fireproofing, and leather tanning. CAS: 7487-88-9, Molecular Formula: MgO₄S, Molecular Weight: 120.37 g/mol, Storage: Ambient, Signal Word: None. Molekula supplies Magnesium sulfate anhydrous from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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500 g — $34.20 per pack
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1 kg — $43.30 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White powder or crystals |
| Identification | Conforms to reference |
| pH | 5.0 - 9.5 |
| Chloride (Cl-) | ≤0.03% |
| Assay | ≥98% (MgSO4) |
| Heavy Metals (Pb) | ≤0.0008% |
| Iron (Fe) | ≤0.003% |
| Arsenic (As) | ≤0.0002% |
| Magnesium (Mg) | ≥19.8% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Orthorhombic crystals |
| Odour | Odorless |
| Melting Point | 1124 °C (decomposition) |
| Density | 2.66 g/cm³ |
| Water Solubility | 360 g/L at 20 °C |
| Solubility (other solvents) | In ether, 1.16 g/100 ml at 18 °C; insoluble in acetone; soluble in alcohol and glycerin |
| Refractive Index | 1.56 |
Source: PubChem CID 24083 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 27614824 |
| CAS Number | 7487-88-9 |
| IUPAC Name | magnesium sulfate |
| EC Number | 231-298-2 |
| Molecular Formula | MgO₄S |
| Molecular Weight | 120.37 |
| Exact Mass | 119.9368 |
| SMILES | [O-]S(=O)(=O)[O-].[Mg+2] |
| InChIKey | CSNNHWWHGAXBCP-UHFFFAOYSA-L |
| InChI | InChI=1S/Mg.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2 |
| PubChem CID | 24083 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2833.21.0000 |
| Tariff Code | 2833210000 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- MAGNESIUM SULFATE
- Magnesium sulfate (1:1)
- Magnesium sulfate anhydrous
- Magnesiumsulfat
- MgSO4
- Sal Angalis
- Sal De sedlitz
- Sulfuric acid magnesium salt
- Sulfuric acid magnesium salt (1:1)
- Tomix OT
Frequently asked questions
What is magnesium sulfate anhydrous used for?
It is commonly used as a drying agent in organic synthesis and as a reagent in various chemical reactions.
What is the chemical formula and molecular weight?
The formula is MgO₄S and the molecular weight is 120.37 g/mol.
How should magnesium sulfate anhydrous be stored?
It should be stored at ambient temperature, protected from moisture.
What grade is available?
We offer reagent grade for laboratory use.
Can Molekula supply it in bulk?
Yes, we can supply magnesium sulfate anhydrous in bulk quantities—please contact us for pricing and availability.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS).
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.