# L-Arginine in Pesticide Formulations; Exemption From the Requirement for a Tolerance
> **Rule** · Final rule. · Published 2025-05-14 · Effective 2025-05-14 · 90 FR 20396
## Document
- **Document number:** 2025-08508
- **Category:** pesticide
- **Federal Register citation:** 90 FR 20396
- **CFR reference:** 40 CFR 180
- **Publication date:** 2025-05-14
- **Effective date:** 2025-05-14
- **EPA docket:** EPA-HQ-OPP-2024-0347
## Abstract

This regulation establishes an exemption from the requirement of a tolerance for residues of l-arginine (CAS Reg. No. 74-79-3) when used as an inert ingredient (protein stabilizer) on greenhouse pre- bloom cucumbers at a maximum concentration of <=1%. D. O'Shaughnessy Consulting, Inc. on behalf of A&L Biological Inc. submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting establishment of an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of l-arginine, when used in accordance with the terms of those exemptions.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/05/14/2025-08508/l-arginine-in-pesticide-formulations-exemption-from-the-requirement-for-a-tolerance)
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