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.
It reacts vigorously with most metals, but Gold will withstand its action. It is also a powerful oxidising agent, and will react with most substances. It is used to separate silver from gold in ored like electrum, making silver nitrate (lunar crystals).
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Category: Alchemical Symbols.
More symbols in Alchemical Symbols:
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, sty… read more »