# Lignosulfonic Acid, Calcium, Comp. With 1,6 Hexanediamine Polymer With Guanidine Hydrochloride (1:1); Tolerance Exemption
> **Rule** · Final rule. · Published 2018-08-24 · Effective 2018-08-24 · 83 FR 42780
## Document
- **Document number:** 2018-18407
- **Category:** pesticide
- **Federal Register citation:** 83 FR 42780
- **CFR reference:** 40 CFR 180
- **Publication date:** 2018-08-24
- **Effective date:** 2018-08-24
- **EPA docket:** EPA-HQ-OPP-2017-0520
## Abstract

This regulation establishes an exemption from the requirement of a tolerance for residues of lignosulfonic acid, calcium, comp. with 1,6 hexanediamine polymer with guanidine hydrochloride (1:1) number average molecular weight 4,500 to 7,000 when used as an inert ingredient in a pesticide chemical formulation. Acadia Regulatory Consulting on behalf of Lidan, Inc. submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of lignosulfonic acid, calcium, comp. with 1,6 hexanediamine polymer with guanidine hydrochloride (1:1) on food or feed commodities.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/08/24/2018-18407/lignosulfonic-acid-calcium-comp-with-16-hexanediamine-polymer-with-guanidine-hydrochloride-11)
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