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CAS 2263-09-4

1-Octanesulfonamide, N-butyl-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-(2-hydroxyethyl)-

This chemical is a PFAS used in older stain- and water-repellent coatings for paper, textiles, and similar products. It persists in the environment, can transform into PFOS-related compounds, and can build up in people and wildlife [1][2].

Where It Comes From

Legacy surface protectors, industrial surfactants, and PFAS manufacturing; some sulfonamidoethanols act as PFOS precursors [1].

How You Are Exposed

Contaminated drinking water, indoor dust from treated carpets and upholstery, food-contact papers, and certain workplaces [1][2].

Why It Matters

PFAS exposure has been linked to immune effects, increased cholesterol, liver changes, and developmental effects; most evidence is from PFOS/PFOA studies [1][3].

Who Is at Risk

Workers handling PFAS, people near contaminated water or waste sites, pregnant people, fetuses, infants, and young children [1][2].

How to Lower Your Exposure

Follow local water advisories; use certified filters (activated carbon or reverse osmosis) if needed; reduce dust with wet cleaning/HEPA vacuum; choose PFAS-free products and avoid stain-resistant treatments when possible [2].

References

  1. [1]ATSDR. Toxicological Profile for Perfluoroalkyls (PFAS). U.S. DHHS, 2021. https://www.atsdr.cdc.gov/toxprofiles/tp200.pdf
  2. [2]ATSDR/CDC. PFAS and Your Health (including Reduce Your Exposure). https://www.atsdr.cdc.gov/pfas/
  3. [3]NTP. Monograph on Immunotoxicity Associated with Exposure to PFOA and PFOS, 2016. https://ntp.niehs.nih.gov/ntp/ohat/pfoa_pfos/PFOA_PFOSMonograph_508.pdf

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