Pharaoh’s snake reaction

Video stupefacente di una reazione chimica del Tiocianato di mercurio.

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This property was discovered soon after the first synthesis of mercury thiocyanate by Wohler in 1821: “winding out from itself at the same time worm-like processes, to many times its former bulk, a very light material the color of graphite…”. For some time, a firework product called “Pharaoschlangen” was available to the public in Germany, but was eventually banned when the toxic properties of the product were tragically discovered trough the death of several children mistakenly eating the resulting solid
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Maggiori info [url=http://chemistry.about.com/b/2010/05/31/pharoahs-snake-firework-or-chemistry-demonstration.htm]qui[/url].

:baz: By un bazinga involontario di Sylar