EPA Hosts Virtual Meetings to Assess Silicone Chemical Safety
Published Date: 9/19/2025
Notice
Summary
The EPA is holding two virtual meetings in late 2025 to review the safety of a chemical called D4, which is used in many products. They want experts and the public to check their draft report and share thoughts before final decisions. This could affect companies using D4 and might lead to new rules to keep people and the environment safe.
Analyzed Economic Effects
2 provisions identified: 1 benefits, 1 costs, 0 mixed.
D4 review may lead to new rules for users
Companies that use the chemical D4 could be affected by the EPA's draft risk evaluation prepared under the Toxic Substances Control Act (TSCA). The draft will be peer reviewed by the SACC at meetings on November 18 and December 2–5, 2025, and EPA says this review could lead to new rules to protect people and the environment.
Public peer review meetings and comment
You can view and comment on EPA's draft risk evaluation for the chemical octamethylcyclotetrasiloxane (D4). The Science Advisory Committee on Chemicals (SACC) will hold a preparatory meeting on November 18, 2025 and a peer review meeting December 2–5, 2025, and EPA is soliciting public comment on the draft documents and charge questions.
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