saippuakivi

Saippuakivi is the Finnish word for potassium hydroxide, also known as caustic potash. It is a strong inorganic alkali with the chemical formula KOH. In its solid form, saippuakivi appears as white pellets or flakes and is highly hygroscopic, meaning it readily absorbs moisture from the air. It is also corrosive and can cause severe burns upon contact with skin and eyes.

Historically, saippuakivi played a crucial role in soap making. When reacted with fats and oils, it produces potassium salts of fatty acids, which are softer and more soluble than sodium salts, resulting in liquid soaps. This is where its Finnish name, literally translating to "soap stone," originates. Beyond soap, saippuakivi has numerous industrial applications. It is used in the production of fertilizers, batteries, and various chemicals. It also finds use in cleaning agents, particularly for oven and drain cleaners due to its ability to break down grease and organic matter.

Saippuakivi is manufactured through the electrolysis of potassium chloride solutions. Due to its corrosive nature, handling saippuakivi requires caution and appropriate personal protective equipment. It is essential to store it in airtight containers in a dry place to prevent it from absorbing moisture and becoming less effective or even dangerous.