# Isoxadifen-ethyl; Pesticide Tolerance
> **Rule** · Final rule. · Published 2007-11-14 · Effective 2007-11-14 · 72 FR 63994
## Document
- **Document number:** E7-22223
- **Category:** pesticide
- **Federal Register citation:** 72 FR 63994
- **CFR reference:** 40 CFR 180
- **Publication date:** 2007-11-14
- **Effective date:** 2007-11-14
- **EPA docket:** EPA-HQ-OPP-2005-0305
## Abstract

This regulation establishes tolerances for residues of isoxadifen-ethyl (ethyl 5,5-diphenyl-2-isoxazoline-3-carboxylate; CAS Reg. No. 163520-33-0) and its metabolite 4,5-dihydro-5,5,diphenyl-3- isoxazolecarboxylic acid when used as an inert ingredient (safener) in or on corn, sweet, kernel plus cob with husks removed; corn, sweet, forage; corn, sweet, stover; corn, pop, grain; corn, pop, stover; and corn, oil. EPA is also revising existing tolerances for residues of isoxadifen-ethyl in or on corn, field, forage and corn, field, hay, and removing the seasonal application rate specification from existing tolerances. Interregional Research Project Number 4 (IR-4) and Bayer CropScience requested certain tolerance amendments for the inert ingredient safener isoxadifen-ethyl under the Federal Food, Drug, and Cosmetic Act (FFDCA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/11/14/E7-22223/isoxadifen-ethyl-pesticide-tolerance)
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