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Per- and polyfluoroalkyl substances (also PFAS [1],PFASs, [2] and sometimes referred to as "forever chemicals" [3] [4]) 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. [5]
Although the dangers of so-called forever chemicals are well-documented, these harmful substances have been detected in a range of personal care products used by consumers on a daily basis ...
August 2000 In his research in preparation for the court case, Bilott found an article mentioning the "little-known substance"—a surfactant— called perfluorooctanoic acid (PFOA) or C8—had been found in DuPont's Dry Run Creek, adjacent to Tennant farm, and Bilott requested "more information on the chemical". This concerned DuPont's lawyer ...
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 wristbands were also checked for 20 different types of forever chemicals. Based on the findings, PFHxA was the most common, appearing in nine of the 22 tested wristbands.
Forever chemicals have long been linked with adverse health effects. Per the Centers for Disease Control and Prevention , we know that there are associations between exposure to PFAS and health ...
Persistent organic pollutants (POPs) are organic compounds that are resistant to degradation through chemical, biological, and photolytic processes. [1] They are toxic and adversely affect human health and the environment around the world. [1]
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...