The Collaborative International Dictionary
Pearlash
Pearlash \Pearl"ash`\, n. (Chem.) A white amorphous or granular substance which consists principally of potassium carbonate, and has a strong alkaline reaction. It is obtained by lixiviating wood ashes, and evaporating the lye, and has been an important source of potassium compounds. It is used in making soap, glass, etc.
Wiktionary
pearlash
n. (context organic compound English) A white amorphous or granular substance which consists principally of potassium carbonate and has a strong alkaline reaction. It is obtained by lixiviate wood ashes and evaporate the lye, and has been an important source of potassium compounds. It is used in making soap, glass, etc.