Potassium hydroxide (chemical formula KOH), commonly called caustic potash or potash lye, is an inorganic alkali metal hydroxide and one of the strongest bases used in industry. It appears as a white, odorless solid — typically in pellet, flake, or powder form — and dissolves readily in water with a strong exothermic (heat-releasing) reaction.
Calcium hydroxide — chemical formula Ca(OH)₂ — is an inorganic compound produced by reacting calcium oxide (quicklime) with water in a controlled exothermic process known as slaking.
