Caput mortuum
In alchemy, residue from sublimation, symbolizing decline and decay, represented with a stylized human skull; specifically, byproduct from sulfuric acid manufacture, used as a purple pigment
Caput mortuum (plural capita mortua; literally "dead head") is a Latin term used in alchemy to signify a useless substance left over from a chemical operation such as sublimation and the epitome of decline and decay (alternatively called nigredo). Alchemists represented this residue with a stylized human skull, a literal death's head.
Nº Q421089 ★
Common · Knowledge
Caput mortuum
In alchemy, residue from sublimation, symbolizing decline and decay, represented with a stylized human skull; specifically, byproduct from sulfuric acid manufacture, used as a purple pigment
Caput mortuum (plural capita mortua; literally "dead head") is a Latin term used in alchemy to signify a useless substance left over from a chemical operation such as sublimation and the epitome of decline and decay (alternatively called nigredo). Alchemists represented this residue with a stylized human skull, a literal death's head.
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From Wikipedia
Caput mortuum (plural capita mortua; literally "dead head") is a Latin term used in alchemy to signify a useless substance left over from a chemical operation such as sublimation and the epitome of decline and decay (alternatively called nigredo). Alchemists represented this residue with a stylized human skull, a literal death's head. The symbol shown on this page was also used in 18th-century chemistry to mean residue, remainder, or residuum. Caput mortuum was also sometimes used to mean crocus metallorum, i.e. brownish-red metallic compounds such as crocus martis (ferrous sulfate), and crocus veneris (copper oxidule).
Text: Wikipédia, CC BY-SA 4.0. ·
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