EPA announced on December 18, 2023, that it is beginning the process to prioritize five additional toxic chemicals for risk evaluation under TSCA. 88 Fed. Reg. 87423. The chemicals are acetaldehyde, acrylonitrile, benzenamine, 4,4’-methylene bis(2-chloroaniline) (MBOCA), and vinyl chloride. EPA seeks relevant information, including but not limited to, the chemical substance’s hazard and exposure potential; the chemical substance’s persistence and bioaccumulation; potentially exposed or susceptible subpopulations relevant to the prioritization; whether there is any storage of the chemical substance near significant sources of drinking water; the chemical substance’s conditions of use or significant changes in conditions of use, including information regarding trade names; the chemical substance’s production volume or significant changes in production volume; and any other information relevant to the potential risks of the chemical substance that might be relevant to the designation of the chemical substance’s priority for risk evaluation. Comments are due March 18, 2024. EPA has opened a chemical-specific docket for each of the five chemicals. For more information on this notice, please read the full memorandum.
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