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.
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(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).)