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Potassium Hydroxide (KOH) This is our most popular Potassium Hydroxide (KOH) - Potassium Hydroxide Flake

Price: £89.69 Incl. VAT
Product Code: C0204
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What is Potassium Hydroxide?



Potassium Hydroxide 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 and the boiling point is 1327 oCelsius.  It is soluble also in alcohols, ammonia and glycerol. It is sometimes more commonly known as Caustic Potash.



The chemical formula of Potassium Hydroxide is KOH.



Aside from the obvious risk when dissolved in water, Potassium Hydroxide is extremely corrosive at concentrations of 2%, so should 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 Potassium Hydroxide Used For?



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




  • Use in soft soaps through esterification reaction in the presence of triglycerides.


  • Use 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.


  • Manufacture of biodiesel.


  • Use to identify species of fungi in Biological applications.


  • Petroleum and Natural Gas refining.



ReAgent sells Potassium Hydroxide in bags of 25Kg. Contact ReAgent Chemicals if smaller or larger quantities are required.


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We manufacture to ISO 9000 and ISO 14000 standards

Established 1977

ReAgent has been supplying quality chemical products for almost 40 years

Related Documents & Information

  • GHS05
  • GHS07
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