Molekula
Aluminium sulphate hydrated
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
Aluminium sulphate hydrated is an inorganic chemical compound primarily used as a coagulant in water treatment, paper manufacturing, and as a mordant in dyeing processes. It is also employed in fire retardants and as a food additive (E520). This hydrated form contains variable water content, making it highly soluble in water. Aluminium sulphate hydrated has a CAS number of 17927-65-0, with a molecular formula of Al2(SO4)3 · xH2O and an approximate molecular weight of 342.15 g/mol. It should be stored at ambient conditions and handled with care, as it carries a "Danger" signal word due to its corrosive properties. Molekula supplies aluminium sulphate hydrated 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.
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 — £42.00 per pack ex VAT · £50.40 inc. VAT
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 | Colourless, lustrous crystals or crystalline masses; odourless. Ground granular or dusty solid |
| Insoluble Matter | ≤0.2% |
| Iron (Fe) | ≤0.006 % |
| Combined Alumina (as Al2O3) | 16.15 - 17.4 % |
| Basic Alumina (as Al2O3) | 0.6 % - neutral Milligram / Kilogram |
| Lump size | ≤90 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | III |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 90028950 |
| CAS Number | 17927-65-0 |
| Molecular Formula | Al2O12S3 · xH2O |
| Molecular Weight | 342.15 |
| SMILES | [Al].O=S(=O)(O)O.O |
| UN Number | UN3260 |
| REACH Code | Y110 |
| HTS Code | 28332200 |
| Tariff Code | 2833220000 |
Safety & GHS
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Corrosive
GHS05
Hazard statements
- H290 May be corrosive to metals
- H318 Causes serious eye damage
Precautionary statements
- P234 Keep only in original container
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P390 Absorb spillage to prevent material damage
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
No alternate names recorded for this product.
Frequently asked questions
What is aluminium sulphate hydrated commonly used for?
Aluminium sulphate hydrated is primarily used in water treatment for coagulation, in paper manufacturing as a sizing agent, and in fire retardants.
What is the chemical formula and molecular weight of aluminium sulphate hydrated?
The chemical formula is **Al₂(SO₄)₃·xH₂O** (often approximated as **Al₂O₁₂S₃·xH₂O**), with a molecular weight of **342.15 g/mol** (anhydrous basis).
What safety classification does aluminium sulphate hydrated fall under?
It carries a **Signal Word: Danger** due to its corrosive and hazardous properties—handle with appropriate PPE and safety measures.
How should aluminium sulphate hydrated be stored?
Store in a **cool, dry, well-ventilated area at ambient temperature**, away from incompatible substances like strong oxidizers or alkalis.
Does Molekula supply aluminium sulphate hydrated in bulk quantities?
Yes, we offer **bulk quantities** of aluminium sulphate hydrated, with flexible packaging options (e.g., drums, bags) tailored to your needs.
What documentation is provided with an order of aluminium sulphate hydrated?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS/SDS), and a **Packing List** for compliance and safety.
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.