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Perfluorooctanoic acid (PFOA; conjugate base perfluorooctanoate; also known colloquially as C8, for its 8-carbon chain structure) is a perfluorinated carboxylic acid produced and used worldwide as an industrial surfactant in chemical processes and as a material feedstock.
The Devil We Know is a 2018 investigative documentary film by director Stephanie Soechtig regarding allegations of health hazards from perfluorooctanoic acid (PFOA, also known as C8), a key ingredient used in manufacturing Teflon, and DuPont's potential responsibility.
The U.S. Environmental Protection Agency (EPA) published a non-enforceable health advisory for PFOA in 2016. The agency's health advisory level for the combined concentrations of PFOA and PFOS is 70 parts per trillion (ppt). [22] [23] In June 2020 the State of New Jersey published a drinking water standard for PFOA, the first state to do so.
Examples include PFOA and PFOS, frequently present in water-resistant textiles and sprays conferring water-resistant properties to textiles and fire-fighting foam. [3] Data from animal studies of PFOA indicate that it can cause several types of tumors and neonatal death and may have toxic effects on the immune, liver, and endocrine systems.
Perfluorooctanoic acid (PFOA) C 8 HF 15 O 2: perfluorooctanoic acid, PFOA, C8, perfluorooctanoate, perfluorocaprylic acid, FC-143, F-n-octanoic acid, PFO Perfluorononanoic acid (PFNA) C 9 HF 17 O 2: As ion: perfluorononanoate Here the health effects of PFNA, one of the ten most common PFAS, has been more widely studied. [82]
Symptoms of carbon monoxide poisoning Carbon monoxide makes it difficult for you to breathe. It reduces the ability of blood to carry oxygen to your organs, which means your brain and blood won ...
Perfluorooctanesulfonic acid (PFOS) (conjugate base perfluorooctanesulfonate) is a chemical compound having an eight-carbon fluorocarbon chain and a sulfonic acid functional group, and thus it is a perfluorosulfonic acid and a perfluoroalkyl substance (PFAS).
The compound perfluorooctanesulfonamide (PFOSA), a PFOS precursor, was an ingredient [8] and also has been described as the "key ingredient" [9] of Scotchgard. Under US EPA pressure, [ 10 ] in May 2000, 3M announced the phaseout of the production of PFOA , PFOS, and PFOS-related products.