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CAS 65530-83-8

Poly(difluoromethylene), α-[2-[(2-carboxyethyl)thio]ethyl]-ω-fluoro-

This substance is a specialty fluorinated polymer in the PFAS family, used in industrial applications like high‑performance coatings or membranes. It matters because PFAS persist in the environment, and some related PFAS have known health risks [1][2].

Where It Comes From

Made for advanced industrial uses (e.g., coatings, electronics, membranes) as part of the broader PFAS group [2].

How You Are Exposed

Most people have low direct contact; potential exposure can occur via drinking water, air, or dust near PFAS manufacturing/processing sites, and household dust or products treated with PFAS [1][2].

Why It Matters

Health concerns for PFAS are mainly based on smaller PFAS (like PFOA/PFOS), which are linked to immune, cholesterol, liver, and developmental effects, and some cancers (PFOA) [1][2][4].

Who Is at Risk

Workers handling fluoropolymers or PFAS; communities near industrial sources; pregnant people, infants/children; people consuming fish from PFAS‑contaminated waters [1][2].

How to Lower Your Exposure

Check local PFAS water advisories; consider certified filters (granular activated carbon or reverse osmosis) for drinking water; follow workplace controls/PPE; follow fish advisories; reduce use of unnecessary stain- or water‑resistant treatments [1][2][5].

References

  1. [1]ATSDR. Toxicological Profile for Perfluoroalkyls (PFAS), 2021. https://www.atsdr.cdc.gov/toxprofiles/tp200.pdf
  2. [2]U.S. EPA. Learn About PFAS. https://www.epa.gov/pfas
  3. [3]IARC. PFOA classified as carcinogenic to humans (Group 1), 2023. https://www.iarc.who.int/news-events/iarc-monographs-evaluate-the-carcinogenicity-of-perfluorooctanoic-acid-pfoa-tetrafluoroethylene-and-glycidyl-methacrylate/
  4. [4]U.S. EPA. Drinking Water Treatment Technologies for PFAS. https://www.epa.gov/pfas/drinking-water-treatment-technologies-pfas

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