Alchemical Symbols

This page lists all the various symbols in the Alchemical Symbols category.

Alchemical symbols, originally devised as part of alchemy, were used to denote some elements and some compounds until the 18th century. Note that while notation like this was mostly standardized, style and symbol varied between alchemists, so this page lists the most common.

Symbols in this category:

Ammonium salt (alchemy)

One of the alchemical signs for ammonium salt, also known as "sal ammoniacus".

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Ammonium salt (alternate #1)

One of the alchemical signs for ammonium salt, also known as "sal ammoniacus".

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Ammonium salt (alternate #2)

One of the alchemical signs for ammonium salt, also known as "sal ammoniacus".

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Ammonium salt (alternate #3)

A sign for ammonium salt, also known as "sal ammoniacus", used in 18th century chemistry.

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Ammonium salt (alternate #4)

A symbol used to represent ammonium salt in 17th century chemistry.

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Ammonium salt (alternate #5)

A symbol used to represent ammonium salt in 17th century chemistry.

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Antimony

Alchemical symbol for antimony.

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Antimony (alternate #1)

Resembling a cross between a lyre and a trident, this symbol is an alchemical marker for antimony.

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Antimony (alternate #2)

Early chemical symbol for antimony.

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Antimony oxide (alchemy)

The alchemical symbol for antimony oxide.

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Aqua Fortis

Geber made this 'strong water', Nitric acid, by distilling green vitriol, with saltpetre and alum. When pure it is a colourless liquid, but it is often tinged brown by dissolved nitrogen oxides, which also give it a peculiar smell.

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Aqua fortis (alternate)

A symbol used in alchemy to indicate aqua fortis, better known as nitric acid.

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Aqua regia

This mixture of two different acids was an important substance in the practice of alchemy.

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Aqua regia (alternate)

This mixture of two different acids was an important substance in the practice of alchemy.

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Argentum cuprofoetum

An 18th century symbol representing a compound of silver and copper, or argentum cuprofoetum.

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