 | Friedrich Christian Accum - Chemistry - 1803 - 384 pages
...of Cassius.) If \ve immerse into a solution of gold in nitro-muriatic acid a sheet of tin, the oxid of gold is precipitated of a purple colour, and, when scraped off and collected, forms the purple powder, or precipitate of Cassius, much employed in enamelling. It... | |
 | George Gregory - Science - 1808 - 322 pages
...acid (commonly called, on this account, aqua regia), and also by the oxygenated muriatic acid. If a sheet of tin is immersed in a solution of gold, the...was not known as a distinct [metal before the year 1752. Its specific gravity, when pure, exceeds that of gold, and it is therefore the heaviest substance... | |
 | William Henry - Chemistry - 1808 - 614 pages
...solution of green sulphate of iron. IX. When a sheet of tin is immersed in a solution of nitro-muriate of gold, the oxide of gold is precipitated of a purple colour; and, when scraped off and collected, forms the purple powder of Cassius, much employed in enamelling. The same precipitate... | |
 | Daniel Defoe - 1815 - 602 pages
...green sulphate of iron. \Yhen a sheet of tin is im* merged in a solution of nitro-muriate ol gold, th« oxide of gold is precipitated of a purple colour and when scraped ou' and collected forms the " purple powder of Ca«sius," much employed in enamelling. The same precipitate... | |
 | William Henry - Chemistry - 1819 - 500 pages
...takes from the oxide of gold. XI. When a sheet of pure tin is immersed in a solution of nitromuriate of gold, the oxide of gold is precipitated of a purple colour; and, when scraped off and collected, forms the purple powder of Cnssius, much employed in enamelling. Or the metallic salt,... | |
 | Chemistry - 1826 - 652 pages
...oxide of gold. Purple of 1644. When a sheet of pure tin is immersed in a solution of nitro-muriate of gold, the oxide of gold is precipitated of a purple colour; and, when scraped off and collected, forms the purple powder of Cassius, much employed in enamelling. Or the * For a detail... | |
 | Chemistry - 1828 - 664 pages
...takes it from the oxide of gold. 1713. When a sheet of pure tin is immersed in a solution of ^urpieof gold, the oxide of gold is precipitated of a purple colour; and, * For a detail of variot« pxjierinicnte of a similar kind consnlt яп Еа*ау on Combustion, by... | |
 | 1841 - 488 pages
...from its solution by tin. If we immerse into a solution of gold in nitro-muriatic acid a sheet of tin, the oxide of gold is precipitated of a purple colour ; and, when scraped off and collected, forms the purple powder, or precipitate of cassias, much employed in enamelling. It... | |
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When a sheet of pure tin is immersed in a solution of nitro-muriate of gold, the oxide of gold is precipitated of a purple colour; and, when scraped off and collected, forms the purple powder of Cassius, much employed in enamelling. 