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CAS 7738-94-5

Chromic Acid (VI)

CarcinogenCorrosive

Chromic acid (VI) is a highly corrosive form of hexavalent chromium used in metal plating and as a powerful cleaner/oxidizer. It’s toxic and can cause cancer, especially from breathing its mists or fumes [1][2].

Where It Comes From

Chrome plating/anodizing, metal finishing baths, chromate pigments/coatings, stainless‑steel welding fumes, and waste from these industries [1][4][5].

How You Are Exposed

Breathing workplace mists/fumes or dust from chromate paints; skin contact with solutions or cement; drinking water or soil near contaminated sites [1][4][5].

Why It Matters

Causes lung cancer; can burn and scar the nose, throat, and lungs; may trigger asthma; causes skin burns/ulcers and can damage the nasal septum [1][2][3].

Who Is at Risk

Electroplaters/metal finishers, welders/cutters on stainless steel, painters/removers of chromate coatings, cement/pigment workers, and people near plating plants or contaminated groundwater [1][4][5].

How to Lower Your Exposure

At work use closed systems/ventilation, proper respirators and gloves, wash up and don’t bring dust home; at home avoid chromic‑acid cleaners, wet‑wipe dust, check product SDS, test private wells near industry and consider certified filters for Cr(VI) [1][4][5].

References

  1. [1]ATSDR. Toxicological Profile for Chromium. Agency for Toxic Substances and Disease Registry, 2012.
  2. [2]IARC Monographs Vol. 100C. Chromium(VI) compounds. International Agency for Research on Cancer, 2012.
  3. [3]NTP. Report on Carcinogens, 15th ed. Chromium hexavalent compounds. National Toxicology Program, 2021.
  4. [4]CDC/NIOSH. Hexavalent Chromium (Cr(VI)) – Workplace Safety & Health Topics.
  5. [5]U.S. EPA. Integrated Risk Information System (IRIS): Chromium (VI).

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