Global efforts to ban the “Teflon chemical” have hit a sticking point.
PFOA, short for perfluorooctanoic acid, became famous in the 1950s when DuPont started using the stuff in its process for making non-stick frying pans. Since then, PFOA found its way into everything from GoreTex clothing to Stainmaster carpets.
(An earlier version of this story mistakenly identified 3M’s Scotchgard as containing PFOA. The key ingredient of Scotchgard is a similar perfluorinated chemical called Perfuorooctane sulfonate (PFOS).)