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Aluminium Sulphate 17%

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Price: £5.21

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Stock Availability

On Shelf - Approx. UK delivery date: Wednesday the 17th September 2025*

In bulk stock - ships within 10 - 12 Working Days (Excluding weekends and public holidays)

4 to 6 weeks approx. (Not guaranteed)

UK Shipping

Unfortunately, we are not currently accepting orders for Northern Ireland.

We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.

AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE

* We will always try to ship as early as possible. Delivery could be much quicker than stated but is not guaranteed

Applications

Water purification
Reducing pH of garden soil
Antiperspirants
Baking powder
Waterproofing agent
Styptic pencils

General

This product is supplied in Kibble (small rocks) Form

What is Aluminium Sulphate? Also known as alum, it is a chemical compound with the formula Al₂(SO₄)₃. It's a white, crystalline powder that is soluble in water. It has various uses, including water purification, as a mordant in dyeing and printing textiles, and as a pH adjuster for garden soil.

Consistent Quality: We provide only high-quality Aluminium Sulphate, ensuring reliable and consistent performance for all applications.

Shipped from Manchester, UK Facility: Sourced and packaged in non-toxic, chemical-resistant containers to ensure safe handling and preserve product quality during transport.

Frequent Uses

Water Treatment
A common flocculant used in water treatment plants, causing suspended particles in water to clump together, forming larger particles that settle out or are easier to filter.

Textiles
Acts as a mordant in dyeing and printing textiles which helps the dye adhere to the fabric fibers, making the colour more permanent.

Gardening
Used to lower the pH of garden soil, making it more acidic, which is beneficial for certain plants like hydrangeas, azaleas, and rhododendrons.

Construction
Can also be used in concrete as a waterproofing agent and accelerator.

Specification

Minimum Assay: <15-20%
Molecular Formula: Al2(SO2)3.18H2O
Molecular Weight: 666.42
Solubility in Water (% weight): Soluble in water
Melting point: 86 C
Chloride (Cl): <0.001%
Heavy metals (as Pb): <0.0011%
Ammonium (NH4): <0.002%
Arsenic (As): <0.001%
Calcium (Ca): <0.0006%
Iron (Fe): <0.0022%
Potassium (K): <0.00032%

Hazards

Hazard Phrases: May be corrosive to metals. Causes serious eye damage.

Prec Phrases: Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician.

corrosive CLP Image