# S-Abscisic Acid, (S)-5-(1-hydroxy-2,6,6-trimethyl-4-oxo-1-cyclohex-2-enyl)-3-methyl-penta-(2Z,4E)-dienoic Acid; Amendment to an Exemption from the Requirement of a Tolerance
> **Rule** · Final rule. · Published 2010-03-12 · Effective 2010-03-12 · 75 FR 11740
## Document
- **Document number:** 2010-5491
- **Category:** pesticide
- **Federal Register citation:** 75 FR 11740
- **CFR reference:** 40 CFR 180
- **Publication date:** 2010-03-12
- **Effective date:** 2010-03-12
- **EPA docket:** EPA-HQ-OPP-2009-0127
## Abstract

This regulation amends the current temporary exemption from the requirement of a tolerance for residues of the biochemical pesticide S-Abscisic Acid, (S)-5-(1-hydroxy-2,6,6-trimethyl-4-oxo-1- cyclohex-2-enyl)-3-methyl-penta-(2Z,4E)-dienoic Acid (ABA), to make it a permanent exemption from the requirement of a tolerance for residues of ABA in or on all food commodities when applied or used preharvest as a plant regulator. Valent Biosciences Corporation submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting that the Agency amend the existing temporary exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of S-Abscisic Acid.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2010/03/12/2010-5491/s-abscisic-acid-s-5-1-hydroxy-266-trimethyl-4-oxo-1-cyclohex-2-enyl-3-methyl-penta-2z4e-dienoic-acid)
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