---
kind: "section"
citation: "40 C.F.R. § 180.585"
title: "40"
number: "180.585"
heading: "Pyraflufen-ethyl; tolerances for residues."
url: "https://uscodex.org/cfr/40/180.585"
---

# §180.585. Pyraflufen-ethyl; tolerances for residues.

- (a) **General.**
  - (1) Tolerances are established for residues of the herbicide, pyraflufen-ethyl, including its metabolites and degradates, in or on the plant commodities listed in table 1 to this [paragraph (a)(1)](#a-1). Compliance with the plant commodity tolerance levels specified in table 1 to this [paragraph (a)(1)](#a-1) is to be determined by measuring only the sum of the parent pyraflufen-ethyl, ethyl 2-[2-chloro-5-(4-chloro-5-difluoromethoxy)-1-methyl-1H-pyrazol-3-yl]-4-fluorophenoxy] acetate, and its acid metabolite, E-1, 2-chloro-5-(4-chloro-5-difluoromethoxy-1-methyl-1H-pyrazol-3-yl)-4-fluorophenoxyacetic acid, calculated as the stoichiometric equivalent of pyraflufen-ethyl in or on the commodity.
  - (2) Tolerances are established for residues of the herbicide, pyraflufen-ethyl, including its metabolites and degradates, in or on the livestock commodities in table 2 to this [paragraph (a)(2)](#a-2). Compliance with the livestock commodity tolerance levels specified in table 2 to this [paragraph (a)(2)](#a-2) is to be determined by measuring only the sum of the parent pyraflufen-ethyl, ethyl 2-[2-chloro-5-(4-chloro-5-difluoromethoxy)-1-methyl-1H-pyrazol-3-yl]-4-fluorophenoxy] acetate and its acid metabolites: E-1, 2-chloro-5-(4-chloro-5-difluoromethoxy-1-methyl-1H-pyrazol-3-yl)-4-fluorophenoxyacetic acid, and E-9, 2-chloro-5-(4-chloro-5-difluoromethoxy-1H-pyrazol-3-yl)-4-fluorophenoxyacetic acid, both calculated as the stoichiometric equivalent of pyraflufen-ethyl in or on the commodity.
- (b) **Section 18 emergency exemptions.** [Reserved]
- (c) **Tolerances with regional registrations.** [Reserved]
- (d) **Indirect or inadvertent residues.** [Reserved]

## Notes

### Amendments

[68 FR 23055, Apr. 30, 2003, as amended at 68 FR 27739, May 21, 2003; 69 FR 26312, May 12, 2004; 73 FR 51743, Sept. 5, 2008; 76 FR 31484, June 11, 2011; 77 FR 75861, Dec. 26, 2012; 78 FR 13263, Feb. 27, 2013; 84 FR 48076, Sept. 12, 2019; 91 FR 8114, Feb. 20, 2026]

### Authority

Authority: 21 U.S.C. 321(q), 346a and 371.

### Source

Source: 36 FR 22540, Nov. 25, 1971, unless otherwise noted.

### Amendments

[68 FR 23055, Apr. 30, 2003, as amended at 68 FR 27739, May 21, 2003; 69 FR 26312, May 12, 2004; 73 FR 51743, Sept. 5, 2008; 76 FR 31484, June 11, 2011; 77 FR 75861, Dec. 26, 2012; 78 FR 13263, Feb. 27, 2013; 84 FR 48076, Sept. 12, 2019; 91 FR 8114, Feb. 20, 2026]