The chemical compound<unk>  <unk> , sometimes known as caustic potash, potassa, potash lye, and<unk>  hydrate, is a metallic base. It is very alkaline and is a "strong base", along with sodium hydroxide, lithium hydroxide, calcium hydroxide, barium hydroxide and strontium hydroxide.
Potassium hydroxide
Ammonium hydroxide
Aluminium hydroxide
Magnesium hydroxide
Sodium hypochlorite
Lithium peroxide
Gentian violet
Didecyldimethylammonium chloride