Wikipedia
Gold(III) chloride, traditionally called auric chloride, is a chemical compound of gold and chlorine. With the molecular formula Au Cl, the name gold trichloride is a simplification, referring to the empirical formula. The Roman numerals in the name indicate that the gold has an oxidation state of +3, which is common for gold compounds. There is also another related chloride of gold, gold(I) chloride (AuCl). Chloroauric acid, HAuCl, the product formed when gold dissolves in aqua regia, is sometimes referred to as "gold chloride" or "acid gold trichloride". Gold(III) chloride is very hygroscopic and highly soluble in water as well as ethanol. It decomposes above 160 °C or in light.
Gold chloride can refer to:
- Gold(I) chloride (gold monochloride), AuCl
- Gold(I,III) chloride (gold dichloride, tetragold octachloride), AuCl
- Gold(III) chloride (gold trichloride, digold hexachloride), AuCl
- Chloroauric acid, HAuCl (brown gold chloride); or its sodium salt, NaAuCl (gold chloride, sodium gold chloride, yellow gold chloride), used as a histological stain
Gold(I,III) chloride is a black solid with the chemical formula Au Cl. It is an example of a mixed valence compound as it contains gold in two different oxidation states; square-planar gold(III) and almost linear gold(I). The compound must be handled carefully as it is photosensitive as well as extremely air and moisture sensitive.
Gold(I) chloride is a compound of gold and chlorine with the chemical formula AuCl.
This page provides supplementary chemical data on gold(III) chloride
Usage examples of "gold chloride".
That is, they're dissolved in the sea water, not in pure form, but in compounds, like copper sulfate and gold chloride.
The secret to reproducing this glass is the use of microscopic particles of gold chloride.