Sodium dichromate is generated on a large scale from ores containing chromium(III) oxides. The ore is fused with a base, typically sodium carbonate, at around 1000 °C in the presence of air (source of oxygen)
Reactions
Dichromate and chromate salts are oxidizing agents. For the tanning of leather, sodium dichromate is first reduced with sulfur dioxide.
In the area of organic synthesis, this compound oxidizes benzylic and allylic C-H bonds to carbonyl derivatives.
Like all hexavalent chromium compounds, sodium dichromate is considered hazardous. It is also a known carcinogen.
Read more: http://www.chromium-chromium.net/Chromate-series/Industrial-Sodium-Dichromate/
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