# 2-Pyrrolidinone, 1-butyl-; Exemption From the Requirement of a Tolerance
> **Rule** · Final rule. · Published 2016-11-10 · Effective 2016-11-10 · 81 FR 78923
## Document
- **Document number:** 2016-27212
- **Category:** pesticide
- **Federal Register citation:** 81 FR 78923
- **CFR reference:** 40 CFR 180
- **Publication date:** 2016-11-10
- **Effective date:** 2016-11-10
- **EPA docket:** EPA-HQ-OPP-2015-0655
## Abstract

This regulation establishes an exemption from the requirement of a tolerance for residues of 2-pyrrolidinone, 1-butyl- (CAS Reg. No. 3470-98-2) when used as an inert ingredient (solvent/cosolvent) in pesticide formulations applied to growing crops only at a concentration not to exceed 30% by weight under EPA regulations. SciReg. Inc. on behalf of Taminco U.S., Inc. a subsidiary of Eastman Chemical Company submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting the establishment of an exemption from the requirement of a tolerance. This rule eliminates the need to establish a maximum permissible level for residues of 2-pyrrolidinone, 1-butyl- when used in accordance with the regulations.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/11/10/2016-27212/2-pyrrolidinone-1-butyl--exemption-from-the-requirement-of-a-tolerance)
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