April 18, 20233E Global Research Team
On 29 March 2023 the U.S. Environmental Protection Agency (EPA) issued a preliminary regulatory determination to regulate perfluorohexane sulfonic acid (PFHxS), hexafluoropropylene oxide dimer acid (HFPO-DA) and its ammonium salt (also known as a GenX chemicals), perfluorononanoic acid (PFNA), and perfluorobutane sulfonic acid (PFBS) and mixtures of these per- and...