Potassium hydroxide (KOH) — Ingredient sheet

Potassium hydroxide (KOH)

Potassium hydroxide (KOH), a strong base sold as white solid flakes or pellets.

Characteristics

• Highly soluble in water, giving a strongly alkaline solution.
• Dissolving releases heat and may cause spattering.
• Absorbs moisture from the air.
• Reacts with fats and oils to form potassium soaps.
• Attacks metals such as aluminium and zinc.

Role in the preparation: Used to raise pH or to make potassium soap by reaction with vegetable oils.

Caution: Corrosive to eyes and skin: wear gloves and goggles, always add it slowly to cold water and store it tightly closed out of reach of children.

Sources: NOAA CAMEO Chemicals - Potassium hydroxide

Documentary information: this is neither a recommendation for use nor a plant-protection or veterinary claim. Check your country's regulations before any use.