Rule Environmental Protection Agency March 25, 2026

Dimethylpolysiloxane in Pesticide Formulations; Exemption From the Requirement for a Tolerance

This regulation establishes an exemption from the requirement of a tolerance for residues of methyl end-capped polydimethylsiloxane (CAS Reg. No 63148-62-9); also known as dimethylpolysiloxane when...

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Document type: Rule. Agency: Environmental Protection Agency. Published: 2026-03-25.

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The practical question is whether this changes operational compliance requirements and enforcement posture, formulation and approved-input decisions. If it does, pull the source document and decide whether the item needs action now, monitoring, or no response.

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