# 1,3-Propanediol; Exemptions From the Requirement of a Tolerance
> **Rule** · Final rule. · Published 2013-06-12 · Effective 2013-06-12 · 78 FR 35143
## Document
- **Document number:** 2013-13823
- **Category:** pesticide
- **Federal Register citation:** 78 FR 35143
- **CFR reference:** 40 CFR 180
- **Publication date:** 2013-06-12
- **Effective date:** 2013-06-12
- **EPA docket:** EPA-HQ-OPP-2012-0921
## Abstract

This regulation establishes exemptions from the requirement of a tolerance for residues of 1,3-propanediol (CAS Reg. No. 504-63-2) when used as an inert ingredient solvent, co-solvent, diluent, or freeze-point depressant in pesticide formulations applied to growing crops and to raw agricultural crops after harvest and in antimicrobial pesticide formulations applied to food-contact surfaces in public eating places, dairy-processing equipment, and food-processing equipment and utensils. DuPont Tate & Lyle BioProducts submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting establishment of exemptions from the requirement of a tolerance. These regulations eliminate the need to establish a maximum permissible level for residues of 1,3-propanediol.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/06/12/2013-13823/13-propanediol-exemptions-from-the-requirement-of-a-tolerance)
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