# Poly(hexamethylenebiguanide) hydrochloride (PHMB); Exemption from the Requirement of a Tolerance
> **Rule** · Final rule. · Published 2008-01-09 · Effective 2008-01-09 · 73 FR 1512
## Document
- **Document number:** E8-189
- **Category:** pesticide
- **Federal Register citation:** 73 FR 1512
- **CFR reference:** 40 CFR 180
- **Publication date:** 2008-01-09
- **Effective date:** 2008-01-09
- **EPA docket:** EPA-HQ-OPP-2005-0268
## Abstract

This regulation establishes an exemption from the requirement of a tolerance for residues of the insecticide, Poly(hexamethylenebiguanide) hydrochloride (PHMB) on all food when residues are the result of lawful application of a food contact surface sanitizer containing PHMB as a sanitizer solution in food handling establishments when applied as a sanitizer. Arch Chemicals Inc. submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), as amended by the Food Quality Protection Act of 1996 (FQPA), requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of PHMB.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/01/09/E8-189/polyhexamethylenebiguanide-hydrochloride-phmb-exemption-from-the-requirement-of-a-tolerance)
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