The notice publishes TSCA review findings rather than new restrictions
EPA has published Certain New Chemicals or Significant New Uses; Statements of Findings—May 2026 under Section 5 of the Toxic Substances Control Act.
The notice covers EPA findings for certain premanufacture notices and significant new use notices reviewed under TSCA. When EPA reaches a Section 5(a)(3)(C) conclusion that a new chemical substance or significant new use is not likely to present an unreasonable risk of injury to health or the environment, TSCA Section 5(g) requires EPA to publish a statement of that finding.
This is therefore not a new restriction list and it is not a medical-device regulation.
A “not likely” finding is tied to the reviewed conditions of use
The practical meaning of a Section 5(a)(3)(C) finding is that EPA has completed its review and determined that the chemical substance or significant new use is not likely to present an unreasonable risk under the conditions evaluated.
For the submitter, EPA states that manufacture may commence after notification by the Agency notwithstanding any remaining portion of the applicable review period.
That conclusion should not be read as an unrestricted approval for every possible use of the chemical. EPA notes that some “not likely” determinations are based on the intended conditions of use described in the PMN together with a proposed Significant New Use Rule addressing other reasonably foreseen uses.
EPA’s public table provides case-level detail
EPA’s public determination table identifies individual PMN cases and links to the underlying determination documents.
One May 2026 example is PMN P-26-0024, identified generically as Maleated polyalkene, aminoethyl substituted heteromonocycle, carbopolycycle alkoxylated. EPA’s table records a Section 5(a)(3)(C) “not likely to present an unreasonable risk” decision dated May 19, 2026.
For supply-chain teams, the case number is more useful than a general statement that a material has been “cleared by EPA,” because the determination document provides the regulatory context for the reviewed chemical and conditions of use.
Why this can still matter to medical-device companies
The Federal Register notice does not regulate finished medical devices directly.
Its relevance is upstream. Medical-device manufacturers may use polymers, coatings, adhesives, lubricants, electronic chemicals, additives, and other materials sourced from suppliers that are introducing new chemical substances into U.S. commerce.
When a supplier changes a formulation or introduces a new U.S. chemical input, regulatory, materials, EHS, and supply-chain teams can use the PMN or SNUN case number to trace EPA’s determination rather than relying only on a supplier statement or safety data sheet.
What companies can check
- Ask suppliers for the specific PMN or SNUN case number when they refer to an EPA new-chemical review.
- Confirm whether the EPA determination is tied to particular conditions of use, exposure controls, or a related SNUR.
- Assess whether the material change triggers internal chemical-compliance, toxicological, biological-evaluation, or change-control review.
- Record TSCA case information alongside supplier identity, material specifications, and SDS data where the chemical is relevant to the product.
- Treat the Federal Register notice as a monitoring signal and escalate only when a chemical is actually present in the company’s materials or supply chain.
For most medical-device organizations, this type of TSCA notice is better treated as upstream materials intelligence than as a standalone device-regulatory change. Its value increases when it can be connected to a specific supplier, formulation, or material used in a product.
Sources
- Primary official sourceCertain New Chemicals or Significant New Uses; Statements of Findings—May 2026 (opens in a new tab)U.S. Environmental Protection Agency
- Supporting sourceChemicals Determined Not Likely to Present an Unreasonable Risk Following Pre-Manufacture Notification Review (opens in a new tab)U.S. Environmental Protection Agency
- Supporting sourcePremanufacture Notices (PMNs) and Significant New Use Notices (SNUNs) Table (opens in a new tab)U.S. Environmental Protection Agency