Sep 18, 2024 · The long-chain PFCs comprise two sub-categories: perfluoroalkyl sulfonates (PFAS) and long-chain perfluoroalkyl carboxylates (PFAC). The PFAS sub-category includes …

Understanding of the physical and chemical properties of PFAS is important for the prediction of their fate and transport in the environment. The available information about physical and …

Perfluoroalkyl carboxylic acids (PFCAs), or perfluoroalkyl carboxylates, are terminal degradation products of select precursor polyfluoroalkyl substances, such as fluorotelomer alcohols …

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 …

ECF is used to create perfluoroalkane sulfonyl fluorides (PASFs), which are the building blocks for other sulfonyl-based PFAS, as well as perfluoroalkyl carboxylate derivatives. These ECF …

A rule addressing the perfluoroalkyl carboxylate (PFAC) sub-category could expand the reach of the 2010/15 PFOA Stewardship Program beyond the eight participating companies and further …

Jul 27, 2020 · Under the Toxic Substances Control Act (TSCA), the Environmental Protection Agency (EPA) is finalizing amendments to the significant new use rule (SNUR) for long-chain …

Nov 1, 2023 · Functional groups refer to a group of atoms within a molecule that have their own characteristic properties, for instance, a carboxylate functional group that consists of a …

Sep 26, 2024 · Per- and polyfluoroalkyl substances (PFAS) are a large class of thousands of synthetic chemicals that are used throughout society. However, they are increasingly detected …

Higher blood levels have been found in communities where local water supplies have been contaminated by PFAS. People exposed to PFAS in the workplace can have levels many …