# Zein; Exemption From the Requirement of a Tolerance
> **Rule** · Final rule. · Published 2023-02-27 · Effective 2023-02-27 · 88 FR 12220
## Document
- **Document number:** 2023-03831
- **Category:** pesticide
- **Federal Register citation:** 88 FR 12220
- **CFR reference:** 40 CFR 180
- **Publication date:** 2023-02-27
- **Effective date:** 2023-02-27
- **EPA docket:** EPA-HQ-OPP-2022-0364
## Abstract

This regulation establishes an exemption from the requirement of a tolerance for residues of zein (CAS Reg. No. 9010-66-6) when used as an inert ingredient (stabilizing agent) in pesticide formulations applied to animals. The United States Department of Agriculture, Animal and Plant Health Inspection Service (USDA APHIS), 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 zein when used in accordance with the terms of the exemption.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2023/02/27/2023-03831/zein-exemption-from-the-requirement-of-a-tolerance)
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