Quick Answer: The Potassium Hydroxide Flakes Laboratory Supply is potassium hydroxide (KOH) in flake form, a corrosive strong base used under supervision for alkali chemistry, neutralisation, pH work and solution preparation.
Last updated: October 2026
Key Features
Formula KOH, CAS 1310-58-3
Molecular weight about 56.1 g/mol
Also known as caustic potash or potassium hydrate
Flakes for controlled weighing with dry tools
Highly water-soluble, releasing heat as it dissolves
Hygroscopic, absorbing moisture and carbon dioxide if left open
Technical Specifications
Specification
Value
Chemical name
Potassium hydroxide
Formula
KOH / HKO
CAS number
1310-58-3
Molecular weight
About 56.1 g/mol
Form
Flakes
About This Product
Potassium hydroxide is used to teach strong bases, hydroxide ions, alkalinity and neutralisation, and to show exothermic dissolution. Solutions are made by adding the flakes slowly to water with stirring and cooling, never in large portions at once, while wearing splash goggles, gloves and a lab coat. The container is closed tightly straight after use and stored dry, away from acids. Export supply of the Potassium Hydroxide Flakes Laboratory Supply can be arranged to laboratories and schools in Morocco, Saint Lucia, Madagascar, Zambia and Cameroon.
Frequently Asked Questions
Q1. Why must potassium hydroxide flakes be kept tightly closed? The flakes are hygroscopic and deliquescent, so if left open they absorb moisture and carbon dioxide from the air.
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