From Risk to Innovation How the EPA’s D4 Review Could Transform Silicone Production

Vinodhini Harish

07 Oct 2025
We are living in a resource-conscious world, and we are in a critical position to balance innovation with sustainability and regulation in the silicone industry. As global demand for silicones rises for versatile, high-performance materials, companies and governments are turning their attention to the environmental impact of core chemicals, such as Octamethylcyclotetrasiloxane (D4). With new initiatives like Elkem’s REPOS project and the U.S. EPA’s draft risk evaluation, a new narrative is emerg;

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