Prepared chemical compounds known to alchemists and apothecaries, made by combining or transforming metals and minerals in the furnace and the dissolving vessel. Examples are litharge, a form of lead oxide, verdigris, a green copper salt of acetic acid, and calx, the residue left when an ore or metal is heated. Recipe collections gave these substances working names and uses in medicine, pigment making and metalwork, and alchemical writers treated them as stages on the way to other preparations.
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Compound (Alchemical Substances)
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Litharge (Wikipedia)
Has Member: Litharge, Lead sentence, classQuote, Has Member: Litharge, Lead sentence, class
Litharge (from Greek lithargyros, lithos 'stone' + argyros 'silver' λιθάργυρος) is one of the natural mineral forms of lead(II) oxide, PbO.
Verdigris (Wikipedia)
Has Member: Verdigris, Lead sentence, classQuote, Has Member: Verdigris, Lead sentence, class
Verdigris () is a common name for any of a variety of somewhat toxic copper salts of acetic acid, which range in colour from green to a bluish-green depending on their chemical composition.
Calx (Wikipedia)
Has Member: Calx, Lead sentence, classQuote, Has Member: Calx, Lead sentence, class
Calx is a substance formed from an ore or mineral that has been heated.
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