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Chromium (III) Potassium Sulphate Dodecahydrate >98.5%

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Price: £26.95

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Stock Availability

On Shelf - Approx. UK delivery date: Wednesday the 08th October 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, Jersey and Guernsey.

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

Leather
Textiles
Dyes
Photography
Catalysts

General

What is Chromium (III) Potassium Sulphate Dodecahydrate? Also known as chrome alum, it is a chemical compound with the formula KCr(SO₄)₂·12H₂O. It is a violet-colored solid that is soluble in water and commonly used in leather tanning, textile dyeing, and as a photographic film hardener.

Consistent Quality: We provide only high-quality Chromium (III) Potassium Sulphate Dodecahydrate, 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

Leather Tanning
A key ingredient in the tanning process, where it helps to preserve and strengthen animal hides.

Textiles
In the textile industry, it's used as a mordant, which helps dyes bind to fabrics, making the colours more permanent.

Catalyst Production
Can be used as a starting material in the synthesis of various chromium-containing catalysts.

Photography
Acts as a hardener in photographic film emulsions, preventing the gelatin from swelling or dissolving.

Specification

Assay (iodometric): >98.5%
MF: KCr(SO4)2.12H2O
MW: 499.39 g/mol
MP: 89 °C
Insoluble Matter: <0.01%
Chloride (Cl): <0.03%
Ammonium (HH4): <0.01%
Copper (Cu): <0.005%
Iron (Fe): <0.03%
Lead (Pb): <0.01%
Appearance: Violet Crystalline Powder

Hazards

Hazard Phrases: Causes skin irritation. Causes serious eye irritation.

Prec Phrases: IF ON SKIN: Wash with plenty of soap and water. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Harmful CLP Image