# Guar Hydroxypropyltrimethylammo-nium Chloride; Exemption From the Requirement of a Tolerance
> **Rule** · Final rule. · Published 2013-05-29 · Effective 2013-05-29 · 78 FR 32152
## Document
- **Document number:** 2013-12782
- **Category:** pesticide
- **Federal Register citation:** 78 FR 32152
- **CFR reference:** 40 CFR 180
- **Publication date:** 2013-05-29
- **Effective date:** 2013-05-29
- **EPA docket:** EPA-HQ-OPP-2012-0558
## Abstract

This regulation establishes an exemption from the requirement of a tolerance for residues of guar hydroxypropyltrimethylammonium chloride (CAS Reg. No. 71329-50-5) when used as an inert ingredient (thickener/drift reduction agent) in pesticide formulations applied to growing crops. SciReg. Inc., on behalf of Rhodia Inc., submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting establishment of an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of guar hydroxypropyl trimethylammonium chloride.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/05/29/2013-12782/guar-hydroxypropyltrimethylammo-nium-chloride-exemption-from-the-requirement-of-a-tolerance)
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