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The U.S. Environmental Protection Agency (EPA) announced on July 25, 2024, that it is proposing to designate acetaldehyde, acrylonitrile, benzenamine, vinyl chloride, and 4,4-methylene bis(2-chloroaniline) (MBOCA) as high-priority substances (HPS) for risk evaluation under the Toxic Substances Control Act (TSCA). 89 Fed. Reg. 60420. EPA is providing a 90-day comment period, during which interested persons may submit comments on the proposed designations of these chemicals as HPSs for risk...

The U.S. Environmental Protection Agency (EPA) announced on December 18, 2023, that it is beginning the process to prioritize five additional toxic chemicals for risk evaluation under the Toxic Substances Control Act (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...