1-Octanesulfonamide, N-ethyl-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-[3-(trimethoxysilyl)propyl]-

Used in surface treatments, sealants, coatings, and treated textiles, glass, and stone; can shed to air, dust, or water during manufacturing, use, or disposal [1][2].

Applying waterproofing sprays, contact with treated goods, indoor dust, or drinking water near production or waste sites [1][2].

PFAS persist and can build up in people; exposure to some PFAS is associated with higher cholesterol, immune effects (reduced vaccine response), developmental effects, and certain cancers (e.g., PFOA). Health risks vary by compound, so precaution is advised [1][2][3].

Workers making or applying PFAS products; people using spray repellents indoors; communities near fluorochemical plants or contaminated water; pregnant people, infants, and children [1][2].

Choose PFAS‑free repellents and finishes; avoid spray waterproofers with “fluoro‑” ingredients; reduce dust (HEPA vacuum, wet dusting); if water may be impacted, consider certified activated carbon or reverse osmosis filters and check local water reports [1][2].