# Calcium Salts of Phosphorous Acid; Exemption From the Requirement of a Tolerance
> **Rule** · Final rule. · Published 2018-01-26 · Effective 2018-01-26 · 83 FR 3603
## Document
- **Document number:** 2018-01494
- **Category:** pesticide
- **Federal Register citation:** 83 FR 3603
- **CFR reference:** 40 CFR 180
- **Publication date:** 2018-01-26
- **Effective date:** 2018-01-26
- **EPA docket:** EPA-HQ-OPP-2016-0578
## Abstract

This regulation establishes an exemption from the requirement of a tolerance for the calcium salts of phosphorous acid. Verdesian Life Sciences, LLC., submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA). This regulation eliminates the need to establish a maximum permissible level for residues of calcium salts of phosphorous acid under FFDCA when used in accordance with the terms of the exemption.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/01/26/2018-01494/calcium-salts-of-phosphorous-acid-exemption-from-the-requirement-of-a-tolerance)
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