Having a valence of six.
- More than 95 percent of leather produced in the U.S. is tanned using trivalent and/or hexavalent chromium, the latter of which is an EPA-recognized carcinogen.
- Chromium occurs in both trivalent and hexavalent (Cr VI) forms.
- Zinc-based materials and polymers are replacing hexavalent chromium.
Definition of hexavalent in:
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