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Hexavalent chromium (chromium(VI), Cr(VI), chromium 6) is any chemical compound that contains the element chromium in the +6 oxidation state (thus hexavalent). Virtually all chromium ore is processed via hexavalent chromium, specifically the salt sodium dichromate.

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CDC–NIOSH Pocket Guide to Chemical Hazards. Chromic acid and chromates. ... Toxicological review of hexavalent chromium. U.S. Environmental. Protection ...

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