TSCA 8(d) Health and Safety Data Reporting: Proposed Addition of 16 Substances
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Rule Summary
This proposed rule under section 8(d) of the Toxic Substances Control Act (TSCA) would require manufacturers (including importers) of 16 chemicals to report unpublished health and safety studies to EPA.
The chemicals that would be subject to this rule are:
- 4,4-Methylene bis(2-chloraniline) (CASRN 101-14-4),
- 4-tert-octylphenol(4-(1,1,3,3-Tetramethylbutyl)-phenol) (CASRN 140-66-9),
- Acetaldehyde (CASRN 75-07-0),
- Acrylonitrile (CASRN 107-13-1),
- Benzenamine (CASRN 62-53-3),
- Benzene (CASRN 71-43-2),
- Bisphenol A (CASRN 80-05-7),
- Ethylbenzene (CASRN 100-41-4),
- Hydrogen fluoride (CASRN 7664-39-3),
- N-(1,3-Dimethylbutyl)-N’-phenyl-p-phenylenediamine (6PPD) (CASRN 793-24-8),
- 2-anilino-5-[(4-methylpentan-2-yl) amino]cyclohexa-2,5-diene-1,4-dione (6PPD-quinone) (CASRN 2754428-18-5),
- Naphthalene (CASRN 91-20-3),
- Styrene (CASRN 100-42-5),
- Tribomomethane (Bromoform) (CASRN 75-25-2),
- Triglycidyl isocyanurate (CASRN 2451-62-9), and
- Vinyl Chloride (CASRN 75-01-4).
In December 2023, EPA began the process to prioritize five of these 16 chemicals for risk evaluation under TSCA: Acetaldehyde, Acrylonitrile, Benzenamine, MBOCA, and Vinyl Chloride. Ten of the chemicals were identified as candidates for prioritization but were not ultimately included in the December 2023 initiation of prioritization. 13 of the 16 chemicals were included in the 2014 TSCA Work Plan, which is a list of chemicals identified by EPA for further assessment based on their hazards and potential for exposure. Accordingly, these health and safety studies would help inform EPA’s prioritization and risk evaluation of chemicals under TSCA, furthering the agency’s efforts to protect human health and the environment.
EPA will accept public comments on this proposed rule for 60 days after publication at www.regulations.gov under docket EPA-HQ-OPPT- 2023-0360.
Rule History
Background
In November 2023, EPA granted a petition from the Yurok Tribe, the Port Gamble S’Klallam Tribe, and the Puyallup Tribe of Indians. The petition asked EPA to address the use of 6PPD in tires. 6PPD reacts with ozone air pollution to form a chemical 6PPD-quinone (CASRN: 2754428-18-5). EPA-funded research has found that concentrations of 6PPD-quinone in stormwater are lethal for coho salmon. In granting the petition, EPA agreed to take a number of actions under TSCA, including finalizing a rule under TSCA section 8(d) to gather additional data on 6PPD. EPA is thus including 6PPD-quinone in this proposed rule.