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CAS 756426-58-1

9CL-PF3ONS

9CL-PF3ONS is a PFAS (“forever chemical”) used mainly as a mist suppressant in hard chrome electroplating, often as part of the F‑53B formulation. It persists in the environment and can build up in people, raising concerns similar to other PFAS about liver, thyroid, cholesterol, and developmental effects [1][2][4].

Where It Comes From

Releases from chrome plating operations and related wastewater; production and use of F‑53B PFAS alternatives to PFOS, especially in Asia [2][3].

How You Are Exposed

Drinking water near plating sites, eating contaminated fish, breathing or skin contact in workplaces, and household dust near affected industries [1][2][3][4].

Why It Matters

Very persistent and can accumulate in blood; studies show maternal transfer to the fetus and presence in breast milk; PFAS as a class are linked to immune, liver, thyroid, and lipid changes [1][2][4].

Who Is at Risk

Electroplating workers; people using private wells near plating facilities; pregnant people, infants, and high fish consumers [1][2][3].

How to Lower Your Exposure

Test private wells for PFAS; consider certified filters (granular activated carbon or reverse osmosis) if PFAS are detected; follow local fish advisories; use workplace PPE and hygiene to limit contact [2][5].

References

  1. [1]ATSDR. Per- and Polyfluoroalkyl Substances (PFAS) and Your Health.
  2. [2]U.S. EPA. Our Current Understanding of the Human Health and Environmental Risks of PFAS.
  3. [3]UN Environment (Stockholm Convention). Report on alternatives to PFOS and its derivatives (includes F‑53B use in chromium plating).
  4. [4]Ruan T. et al. Chlorinated polyfluoroalkyl ether sulfonic acids (F‑53B) in humans and the environment. Environ Sci Technol.
  5. [5]U.S. EPA. Reducing PFAS in Drinking Water: Treatment and Home Water Filters (GAC/RO).

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