# Oxirane, 2-phenyl-, polymer With oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt (1:2) in Pesticide Formulations; Exemption From the Requirement for a Tolerance
> **Rule** · Final rule. · Published 2026-05-13 · Effective 2026-05-13 · 91 FR 26924
## Document
- **Document number:** 2026-09490
- **Category:** pesticide
- **Federal Register citation:** 91 FR 26924
- **CFR reference:** 40 CFR 180
- **Publication date:** 2026-05-13
- **Effective date:** 2026-05-13
- **EPA docket:** EPA-HQ-OPP-2025-3360
## Abstract

This regulation establishes an exemption from the requirement of a tolerance for residues of oxirane, 2-phenyl-, polymer with oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt (1:2) (CAS Reg. No 2983072-24-6); (also known as oxirane, 2-phenyl-, polymer with oxirane, monooctyl ether, sulphosuccinated, disodium salt) when used as an inert ingredient in a pesticide chemical formulation under 40 CFR 180.960. Spring Regulatory Sciences on behalf of Evonik Corporation submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of oxirane, 2-phenyl-, polymer with oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt (1:2) on food or feed commodities when used in accordance with these exemptions.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2026/05/13/2026-09490/oxirane-2-phenyl--polymer-with-oxirane-monohydrogen-2-sulfobutanedioate-octyl-ether-sodium-salt-12)
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