Potassium Hydroxide (KOH)

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Buy Potassium Hydroxide from Trusted UK Suppliers

At ReAgent, we manufacture and supply potassium hydroxide to businesses worldwide. With over 40 years' experience, a catalogue of accreditations, 100% quality guarantee on all products, and discounts available on bulk orders, buying potassium hydroxide has never been easier.

We stock a range of potassium hydroxide products, including potassium hydroxide flakes, pellets and solutions of varying concentrations. Buy from our online shop where orders are shipped within 24 hours. ReAgent sells potassium hydroxide in bags of 25Kg. If smaller or larger quantities are required, please contact us to speak with a member of the team.

What is Potassium Hydroxide?

Potassium hydroxide (KOH) is an inorganic caustic compound. It is extremely alkaline and is known for its powerful exothermic reaction when dissolved in water. The substance is highly hygroscopic with a boiling point of 1327 oC.  It is also soluble in alcohols, ammonia and glycerol. It is sometimes more commonly known as caustic potash.

Aside from the obvious risk when dissolved in water, potassium hydroxide is extremely corrosive at concentrations of 2%. It should, therefore, only be handled by trained and qualified persons. As with all foreign chemicals, care and caution should be exercised when working with these substances.

What is Caustic Potash Used For?

KOH has many similar uses to sodium hydroxide (NaOH) and as such is often substituted for its daily applications. Some examples of these applications are:

  • Used in soft soaps through esterification reaction in the presence of triglycerides
  • Used as an electrolyte in alkaline batteries – KOH is a better electrical conductor that NaOH
  • Due to the corrosive nature of the product, it is commonly used in cleaning products
  • Due to the high solubility of the product, it is commonly added to plant fertilisers
  • Used in the manufacture of biodiesel
  • Used to identify species of fungi in biological applications
  • Petroleum and natural gas refining
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