Noun
a potassium compound often used in agriculture and industry
Source: WordNetAfter heating this substance with calcium hydroxide (slaked lime), a far more strongly basic substance known as caustic potash ( potassium hydroxide ) was produced. Source: Internet
Davy discovered potassium in 1807, deriving it from caustic potash (KOH). Source: Internet
Potassium was first derived by electrolysis of caustic potash (aka potassium hydroxide ), in 1807. citation Terminology Potash refers to potassium compounds and potassium-bearing materials, the most common being potassium chloride (KCl). Source: Internet