The Amalgam reference article from the English Wikipedia on 24-Apr-2004
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Amalgam

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An amalgam is an alloy of mercury. Most metals are soluble in mercury, but some (such as iron) are not.

Ammonium has been isolated in amalgam, but not as the pure pseudometal - it decomposes to ammonia and hydrogen.

Amalgams are commonly used in dental fillings. This has been controversial, as opponents of amalgam believe they cause mercury poisoning. Few dentists accept this charge, however.



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