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CAS 68188-12-5

Alkyl iodides, C4-20, γ-ω-perfluoro

These are perfluoroalkyl iodides (a PFAS precursor) used to make fluoropolymers and water- or stain‑repellent coatings. They matter because they can transform into persistent PFAS that build up in people and the environment [1][2].

Where It Comes From

Fluorochemical manufacturing and processing; releases to air and wastewater; can transform into other PFAS in the environment [1][2].

How You Are Exposed

Highest near facilities or workplaces; inhalation and skin contact for workers; contaminated drinking water, air, or dust for nearby communities [1][2].

Why It Matters

Data on this specific mixture are limited, but its PFAS transformation products (e.g., PFOA, PFNA) are very persistent and linked to immune effects, cholesterol and liver changes, developmental harms, and some cancers [1][3][4].

Who Is at Risk

Fluorochemical workers; people using or living near contaminated water systems; pregnant people and infants may be more vulnerable to PFAS effects [1][2].

How to Lower Your Exposure

Check local PFAS advisories; consider certified water filters (activated carbon or reverse osmosis); follow workplace controls (closed systems, ventilation, PPE); limit use of stain‑repellent treatments when possible [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. Our Current Understanding of the Human Health and Environmental Risks of PFAS. https://www.epa.gov/pfas/our-current-understanding-pfas
  3. [3]NTP. Immunotoxicity of PFOA and PFOS (Monograph). 2016. https://ntp.niehs.nih.gov/whatwestudy/assessments/noncancer/completed/pfoa
  4. [4]IARC. Monographs Vol. 135: Perfluorooctanoic acid (PFOA). 2023. https://monographs.iarc.who.int/list-of-classifications
  5. [5]CDC/ATSDR. PFAS and Your Health: Drinking Water and Health. https://www.atsdr.cdc.gov/pfas/health-effects/exposure.html

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