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CAS 74499-44-8

Phosphoric acid, γ-ω-perfluoro-C8-16-alkyl esters, compds. with diethanolamine

This substance is a PFAS-based surfactant used in firefighting foams and stain-/water-resistant coatings. It’s extremely persistent, can spread in water, and some related PFAS have been linked to health harms, so it matters for communities and workers [1][2].

Where It Comes From

Manufactured for aqueous film-forming foam (AFFF), metal plating, oil recovery, and surface-treatment products; it can transform into stable perfluoroalkyl acids over time [1][2].

How You Are Exposed

Drinking water near airports, military bases, or PFAS-using industries; indoor dust from treated textiles/carpets; certain workplaces; eating fish/wildlife from contaminated waters [1][2][4].

Why It Matters

PFAS persist and can build up in people. Well-studied PFAS (like PFOA/PFOS) are associated with increased cholesterol, immune effects (reduced vaccine response), liver and developmental effects; data for this exact compound are limited [1][3].

Who Is at Risk

Pregnant people, infants/children (higher intake per body weight), firefighters and industrial workers, and residents using contaminated private wells [1][2].

How to Lower Your Exposure

Check local water advisories; if PFAS are present, consider certified filters (activated carbon or reverse osmosis) and alternate water sources; follow fish/game advisories; damp-dust and HEPA-vacuum; choose fewer stain-resistant treatments; workers should use PPE and follow safety practices [1][2][4][5].

References

  1. [1]ATSDR. Toxicological Profile for Perfluoroalkyls (PFAS). U.S. DHHS, 2021.
  2. [2]EPA. Sources and Exposure Pathways of PFAS. https://www.epa.gov/pfas
  3. [3]NTP. Immunotoxicity Associated with PFOA and PFOS (NTP Monograph), 2016.
  4. [4]EPA. Addressing PFAS in Fish and Shellfish. https://www.epa.gov/pfas
  5. [5]EPA. What You Can Do to Reduce PFAS Exposure. https://www.epa.gov/pfas

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