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July 5 2011 3 05 /07 /July /2011 13:10

I have compiled a list of sources for the elements that are available to the amateur chemist. Chromium will be discussed here.

 

Chromium is an extremely shiny bluish-silvery metal in pure form. It is commonly found as a thin plating on objects known as a chrome plating. Chromium(III) compounds are necessary to life in small amounts, while chromium(VI) compounds are highly toxic. Chromium forms a passivation layer like aluminium, allowing it to keep its shine.

 

In element form: Reduce chromium(III) compounds or chromium(VI) compounds by electrolysis. Find a chromium or chrome plated object. Stainless steel has about 18% chromium in it.

 

In compound form: Chromate conversion coated hardware contains a small layer of chromates on the surface to prevent corrosion. Chrome oxide green and chrome rouge are both composed of chromium(III) oxide. Chromated copper arsenate wood contains chromium as well. Many cassette tapes have chromium dioxide in the tape.

 

Here is my sample of chromium. It is a chrome plated Toyota symbol.

 

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Published by LanthanumK - in Elements
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