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- Q4782626 abstract "This is a historical article. For current information, see Nitric acidIn alchemy, aqua fortis (Latin for "strong water") is nitric acid (HNO3). Being highly corrosive, the solution was used in alchemy for dissolving silver and most other metals with the notable exception of gold, which can be dissolved using aqua regia or "regal water". Aqua fortis was prepared by mixing either sand, alum, or vitriol, or the last two together, with saltpeter, then distilling it by a hot fire. The gas collected from this condenses into aqua fortis. It was first described by alchemist Pseudo-Geber.Aqua fortis was useful to refiners for parting or separating silver from gold and copper; to the workers in mosaic for staining and coloring their woods; to other artists for coloring of bone and ivory, which is done by tinging the items with copper or verdigris, then soaking in aqua fortis. Some also turn it into aqua regia, by dissolving in a quarter of its weight of sal ammoniac, and then use this to stain ivory and bone, of a fine purple color. Bookbinders also put it on leather, making fine marble covers for books. Diamond cutters used it to separate diamonds from metalline powders. It was also used in etching copper or brass plates. It was mixed with oil of vitriol and used to stain canes to appear like a tortoise shell by applying several coats while the cane is over hot coals. The canes were then given a gloss with a little soft wax and a dry cloth.".
- Q4782626 wikiPageExternalLink www.chemheritage.org.
- Q4782626 wikiPageWikiLink Q1090.
- Q4782626 wikiPageWikiLink Q11183742.
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- Q4782626 wikiPageWikiLink Q83320.
- Q4782626 wikiPageWikiLink Q897.
- Q4782626 wikiPageWikiLink Q906862.
- Q4782626 comment "This is a historical article. For current information, see Nitric acidIn alchemy, aqua fortis (Latin for "strong water") is nitric acid (HNO3). Being highly corrosive, the solution was used in alchemy for dissolving silver and most other metals with the notable exception of gold, which can be dissolved using aqua regia or "regal water". Aqua fortis was prepared by mixing either sand, alum, or vitriol, or the last two together, with saltpeter, then distilling it by a hot fire.".
- Q4782626 label "Aqua fortis".