# Lambda-cyhalothrin; Time-Limited Pesticide Tolerance
> **Rule** · Final rule. · Published 1997-07-09 · Effective 1997-07-09 · 62 FR 36665
## Document
- **Document number:** 97-17591
- **Category:** air-emissions
- **Federal Register citation:** 62 FR 36665
- **CFR reference:** 40 CFR 180
- **Publication date:** 1997-07-09
- **Effective date:** 1997-07-09
- **EPA docket:** OPP-300509
## Abstract

This regulation establishes a time-limited tolerance for the combined residues of lambda-cyhalothrin and its epimer in or on rice. The names for lambda-cyhalothrin and its epimer are as follows: Lambda- cyhalothrin, a 1:1 mixture of (S)-alpha-cyano-3-phenoxybenzyl-(Z)- (1R,3R)-3-(2-chloro-3,3,3-trifluoroprop-1-enyl) -2,2- dimethylcyclopropanecarboxylate and (R)-alpha-cyano-3-phenoxybenzyl- (Z)-(1S,3S) -3-(2-chloro-3,3,3-trifluoroprop-1-enyl)-2,2- dimethylcyclopropanecarboxylate and Epimer of lambda-cyhalothrin, a 1:1 mixture of (S)-alpha-cyano-3-phenoxybenzyl-(Z)-(1S,3S)-3-(2-chloro- 3,3,3- trifluoroprop-1-enyl)-2,2-dimethylcyclopropanecarboxylate and (R)-alpha-cyano-3-phenoxybenzyl-(Z)-(1R,3R)-3-(2-chloro-3,3,3- trifluoroprop-1-enyl)-2,2-dimethylcyclopropanecarboxylate. The Zeneca Ag Products requested this tolerance under the Federal Food, Drug and Cosmetic Act (FFDCA), as amended by the Food Quality Protection Act of 1966 (Pub. L. 104-170). The tolerance will expire on November 15, 1997.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/07/09/97-17591/lambda-cyhalothrin-time-limited-pesticide-tolerance)
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