---
title: Hexavalent Chromium | one to ONE Holdings
description: "Hexavalent chromium (Cr(VI)): Toxic compound widely used in chrome plating for corrosion resistance, now being phased out."
image: https://www.o2oh.com/hubfs/o2Oh_50mm-2.jpg
---

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# Glossary

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- [Numbers ・ Symbols](https://www.o2oh.com/glossary?val=0_9)

# Hexavalent Chromium

Hexavalent chromium is a collective term for chromium compounds that contain Cr(VI), where chromium has an oxidation state of +6. The most extensive use of metal is in "chrome plating," where it is used to enhance luster, hardness, and [corrosion resistance](https://www.o2oh.com/glossary/corrosion-resistance).

However, hexavalent chromium compounds are highly toxic. Although they were widely used in plating applications, their use has become problematic due to soil contamination.

Consequently, hexavalent chromium is being phased out, particularly in chromate conversion coatings used in [zinc](https://www.o2oh.com/glossary/zinc) plating.

### RELATED WORDS

---

- [Human-in-the-Loop (HITL)](https://www.o2oh.com/glossary/human-in-the-loop-hitl)
- [Human-centric Manufacturing](https://www.o2oh.com/glossary/human-centric-manufacturing)
- [HILP](https://www.o2oh.com/glossary/hilp)
- [Hard-to-Abate Sectors](https://www.o2oh.com/glossary/hard-to-abate-sectors)
- [Hydrogen Reduction Steelmaking (HRS)](https://www.o2oh.com/glossary/hydrogen-reduction-steelmaking-hrs)
- [HID attacks](https://www.o2oh.com/glossary/hid-attacks)

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