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Per- and polyfluoroalkyl substances ( PFAS [1] or PFASs [2]) are a group of synthetic organofluorine chemical compounds that have multiple fluorine atoms attached to an alkyl chain; there are 7 million such chemicals according to PubChem. [3] PFAS came into use after the invention of Teflon in 1938 to make fluoropolymer coatings and products ...
Effects of exposure to PFASs on human health Short-chain PFASs, such as perfluorohexanoic acid (PFHxA) and perfluorobutanesulfonic acid (PFBS), have been found to be highly toxic, despite claims to the contrary by the chemical industry. In many cases where long-chain PFAS were phased out, they were replaced with toxic short-chain PFAS.
The DoD has "used foam containing" PFAS chemicals "in exercises at bases across the country". The DoD, therefore, "risks the biggest liabilities" in relation to the use of PFAS chemicals according to Politico. March 2018 The PFAS Expert Health Panel on PFAS submitted their commissioned report to the Australian government.
During the course of lawsuits against chemical companies in the 2000s and 2010s, internal documents obtained during discovery showed 3M and DuPont researchers knew PFAS was linked to cancer cases ...
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. PFOA is considered a surfactant, or fluorosurfactant, due to its ...
The so-called “forever chemicals” − a name attributed to PFAS' centuries-long half-life − are ubiquitous: In addition to drinking water, they are found in everything from non-stick ...
In acidic form it is a highly reactive strong acid. In its conjugate base form as a salt it is stable and commonly ion paired with ammonium. In the commercial product Surflon S-111 (CAS 72968-3-88) it is the primary compound present by weight. PFNA is used as surfactant for the production of the fluoropolymer polyvinylidene fluoride.
PFAS, short for perfluoroalkyl and polyfluoroalkyl substances, are a large family of chemicals that have been used in a wide variety of products and industries because of their unique stain- and ...