- Pyridinium dichromate
Orange to brown solid
145-147 ° C
Soluble in water
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The Cornforth reagent systematically pyridinium dichromate (PDC ), is the pyridinium salt of dichromic.
For the preparation of the Cornforth - reagent is an aqueous solution of chromium ( VI) oxide mixed with pyridine.
The Cornforth reagent is an orange to brown solid which melts at 145-147 ° C. It is readily soluble in many organic solvents.
It is a powerful oxidizing agent, which is used for the oxidation of alcohols to aldehydes or ketones. Cornforth the reagent is related to the Collins reagent and pyridinium chlorochromate (PCC), pyridinium both also of hexavalent chromium compounds. Due to its toxicity, the Cornforth reagent is used nowadays only rarely.