Potassium Hydroxide (KOH)

Potassium Hydroxide Flake



From: 80.83

Select Quantity:
Select Quantity:

Looking for further options on this product?

  • Custom packaging
  • Personalised labelling
  • Specific pack sizes
  • Bespoke blending
  • Bulk quantities
  • Different grades available

Call 1-800-817-175 for details or Contact Us

  • Product Information
  • Specification
  • Hazard Information
  • Precautionary
  • Shipping Statements
  • MSDS


Why should you Buy Potassium Hydroxide Flake from ReAgent?

  • We supply potassium hydroxide flake in 25Kg bags, with discounts for bulk orders over 4 items
  • MSDS also available to download from our website
  • We offer many other options with all our products, from bespoke blending to specific pack sizes


Is Potassium Hydroxide Dangerous?

In one word, yes! On contact with skin, it causes redness and pain or even serious skin burns and blisters and if in contact with eyes it may cause blurred vision. If inhaled or ingested, staff may experience a cough and sore throat, as well and shortness of breath and abdominal pain. If not treated promptly, it may be fatal.


First Aid In Case Of Exposure

In case of contact with skin and eyes, wash with copious amounts of water for at least 15 minutes. If necessary remove contaminated skin. If ingested, do not induce vomiting but seek medical assistance immediately.


Handling and Storage of Potassium Hydroxide Flake

This compound should be stored in a dry and well-ventilated area, separated from strong acids and metals and away from water sources and sewers. Containers should be clearly labelled with chemical name, as well as toxic and corrosive signs.

It’s non-combustible, but in case of fire it may release toxic fumes. These by-products of decomposition may themselves ignite combustible materials, including wood, paper and clothing. In addition, contact with metals may generate flammable hydrogen gas, and potentially containers can explode when heated.

Personnel handling this chemical must be trained and wear protective clothing at all times to avoid accidental exposure. In additional to the usual gloves and goggles, if staff needs to be exposed to dust or mists, a breathing apparatus must be used.


Over 40 Years’ Experience

We’ve been established in the market as a chemical manufacturer for over 40 years, and during that time we’ve built an enviable reputation forhigh-qualityy products and excellent customer service. We offer a wide range of products, from speciality test kits to buffers and petrochemicals, as well as bespoke solutions. Contact us for further information.




MSDS Files

The following files are available to download:

Product IDProductpost_statusBulkDownload SDS File

Our most popular product is displayed above. Other variants of this product are displayed below.

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