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		<id>http://dbbd.sg/wiki/index.php?action=history&amp;feed=atom&amp;title=Chemistry</id>
		<title>Chemistry - Revision history</title>
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		<updated>2026-08-02T07:12:05Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://dbbd.sg/wiki/index.php?title=Chemistry&amp;diff=7515&amp;oldid=prev</id>
		<title>WikiSysop at 11:19, 21 November 2013</title>
		<link rel="alternate" type="text/html" href="http://dbbd.sg/wiki/index.php?title=Chemistry&amp;diff=7515&amp;oldid=prev"/>
				<updated>2013-11-21T11:19:00Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&#039;diff-marker&#039; /&gt;
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				&lt;td colspan=&#039;2&#039; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&#039;2&#039; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 11:19, 21 November 2013&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot; &gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&#039;diff-marker&#039;&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* Mercury(II) Thiocyanate decomposition is possibly the weirdest chemical reaction in the world. Mercury(II) thiocyanate (Hg(SCN)2) is an inorganic chemical compound, the salt of Hg2+ and the thiocyanate anion. It is a stable solid at room temperature that has the appearance of white powder with chunks; it can also be grey in color, depending on purity. Mercury compounds are extremely toxic and protective equipment should be used whenever working with mercury thiocyanate. However, it is commercially available, though expensive. Mercury thiocyanate is best known for its former use in pyrotechnics, as it will produce a large, winding &amp;quot;snake&amp;quot; when set on fire. This is known as the Pharaoh&amp;#039;s Serpent. Though some people still use it for this purpose, it is generally avoided because of the production of toxic gases when this reaction occurs.&lt;/div&gt;&lt;/td&gt;&lt;td class=&#039;diff-marker&#039;&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* Mercury(II) Thiocyanate decomposition is possibly the weirdest chemical reaction in the world. Mercury(II) thiocyanate (Hg(SCN)2) is an inorganic chemical compound, the salt of Hg2+ and the thiocyanate anion. It is a stable solid at room temperature that has the appearance of white powder with chunks; it can also be grey in color, depending on purity. Mercury compounds are extremely toxic and protective equipment should be used whenever working with mercury thiocyanate. However, it is commercially available, though expensive. Mercury thiocyanate is best known for its former use in pyrotechnics, as it will produce a large, winding &amp;quot;snake&amp;quot; when set on fire. This is known as the Pharaoh&amp;#039;s Serpent. Though some people still use it for this purpose, it is generally avoided because of the production of toxic gases when this reaction occurs.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class=&#039;diff-marker&#039;&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;* Potassium Permanganate and Glycerin&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>WikiSysop</name></author>	</entry>

	<entry>
		<id>http://dbbd.sg/wiki/index.php?title=Chemistry&amp;diff=7514&amp;oldid=prev</id>
		<title>WikiSysop: Created page with &quot;* Mercury(II) Thiocyanate decomposition is possibly the weirdest chemical reaction in the world. Mercury(II) thiocyanate (Hg(SCN)2) is an inorganic chemical compound, the salt...&quot;</title>
		<link rel="alternate" type="text/html" href="http://dbbd.sg/wiki/index.php?title=Chemistry&amp;diff=7514&amp;oldid=prev"/>
				<updated>2013-11-21T11:18:52Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;* Mercury(II) Thiocyanate decomposition is possibly the weirdest chemical reaction in the world. Mercury(II) thiocyanate (Hg(SCN)2) is an inorganic chemical compound, the salt...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;* Mercury(II) Thiocyanate decomposition is possibly the weirdest chemical reaction in the world. Mercury(II) thiocyanate (Hg(SCN)2) is an inorganic chemical compound, the salt of Hg2+ and the thiocyanate anion. It is a stable solid at room temperature that has the appearance of white powder with chunks; it can also be grey in color, depending on purity. Mercury compounds are extremely toxic and protective equipment should be used whenever working with mercury thiocyanate. However, it is commercially available, though expensive. Mercury thiocyanate is best known for its former use in pyrotechnics, as it will produce a large, winding &amp;quot;snake&amp;quot; when set on fire. This is known as the Pharaoh&amp;#039;s Serpent. Though some people still use it for this purpose, it is generally avoided because of the production of toxic gases when this reaction occurs.&lt;/div&gt;</summary>
		<author><name>WikiSysop</name></author>	</entry>

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