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CAS 65530-66-7

Poly(difluoromethylene), α-fluoro-ω-[2-[(2-methyl-1-oxo-2-propenyl)oxy]ethyl]-

This is a fluorinated polymer used to make coatings that repel water, oil, and stains. It matters because fluoropolymers are very persistent “PFAS,” and some related materials can contribute to long‑lasting PFAS in people and the environment [1][2].

Where It Comes From

Made and used in specialty coatings for textiles, paper, paints/inks, sealants, and electronics to add repellency and durability [1].

How You Are Exposed

Contact with treated consumer products, indoor dust, contaminated drinking water or food, and workplace air/skin contact during manufacturing or application [1][2].

Why It Matters

PFAS resist breaking down; certain side‑chain fluorinated polymers can slowly form persistent perfluoroalkyl acids. PFAS exposure has been linked to immune effects, higher cholesterol, liver changes, and some cancers (e.g., PFOA) [2][5].

Who Is at Risk

Workers handling fluorinated coatings; young children (dust and hand‑to‑mouth); pregnant people; communities with PFAS‑impacted water [1][2].

How to Lower Your Exposure

Choose PFAS‑free/untreated products; damp‑dust and HEPA vacuum; check local water quality and consider certified filters (activated carbon or reverse osmosis) if PFAS are present; follow workplace controls and PPE [2][6].

References

  1. [1]EPA. PFAS Explained. https://www.epa.gov/pfas/pfas-explained
  2. [2]ATSDR. Toxicological Profile for Perfluoroalkyls (PFAS). 2021. https://www.atsdr.cdc.gov/toxprofiles/tp200.pdf
  3. [3]IARC. Monographs Vol. 135: Perfluorooctanoic acid (PFOA). 2023. https://monographs.iarc.who.int/
  4. [4]ATSDR. PFAS and Your Health: Reduce Exposure. https://www.atsdr.cdc.gov/pfas/health-effects/reduce-exposure.html

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