# N-(n-Octyl)-2-pyrrolidone in Pesticide Formulations; Tolerance Exemption
> **Rule** · Final rule. · Published 2023-07-25 · Effective 2023-07-25 · 88 FR 47773
## Document
- **Document number:** 2023-15679
- **Category:** pesticide
- **Federal Register citation:** 88 FR 47773
- **CFR reference:** 40 CFR 180
- **Publication date:** 2023-07-25
- **Effective date:** 2023-07-25
- **EPA docket:** EPA-HQ-OPP-2021-0172
## Abstract

This regulation establishes an exemption from the requirement of a tolerance for residues of N-(n-octyl)-2-pyrrolidone (CAS Reg. No. 2687-94-7) when used as an inert ingredient (solvent) in pesticide formulations containing prothioconazole as an active ingredient at a maximum concentration of 15% by weight. International Specialty Products submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting the exemption. This regulation eliminates the need to establish a maximum permissible level for residues of N-(n-octyl)-2-pyrrolidone, when used in accordance with the terms of the exemption.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2023/07/25/2023-15679/n-n-octyl-2-pyrrolidone-in-pesticide-formulations-tolerance-exemption)
---
*AI Analytics · CC0 1.0*