EPA Proposes Five Chemcials as High-Priority Substances for TSCA Risk Evaluation
On Wednesday, 7/24, EPA proposed to designate five chemicals as High-Priority Substances for risk evaluation under the nation’s chemical safety law, the Toxic Substances Control Act (TSCA). If EPA finalizes these designations as proposed, the agency would immediately move forward with the risk evaluation process. This step is consistent with a commitment from the Biden-Harris Administration to understand and address environmental and toxic exposures to ensure that every community has access to clean air and water. More information on the proposed designations of the five High-Priority Substances can be found here.
The five chemical substances EPA is proposing to designate as High-Priority Substances are:
- Vinyl Chloride (CASRN 75-01-4),
- Acetaldehyde (CASRN 75-07-0),
- Acrylonitrile (CASRN 107-13-1),
- Benzenamine (CASRN 62-53-3), and
- 4,4’-methylene bis(2-chloroaniline) (MBOCA) (CASRN 101-14-4).
EPA will accept public comments on the proposed designations for 90 days after publication via docket EPA-HQ-OPPT-2023-0601 at the Regulations.gov page. Upon publication of the Federal Register notice, supporting documents will also be available in the same docket.
