---
kind: "section"
citation: "40 C.F.R. § 180.417"
title: "40"
number: "180.417"
heading: "Triclopyr; tolerances for residues."
url: "https://uscodex.org/cfr/40/180.417"
---

# §180.417. Triclopyr; tolerances for residues.

- (a) **General.**
  - (1) Tolerances are established for residues of the herbicide triclopyr, including its metabolites and degradates, in or on the commodities in table 1 to this [paragraph (a)(1)](#a-1) resulting from the application of the butoxyethyl ester of triclopyr, triethylamine salt of triclopyr, or choline salt of triclopyr. Compliance with the tolerance levels specified in table 1 to this [paragraph (a)(1)](#a-1) is to be determined by measuring only triclopyr, 2-[(3,5,6-trichloro-2-pyridinyl)oxy]acetic acid in or on the commodity.
  - (2) Tolerances are established for residues of the herbicide triclopyr, including its metabolites and degradates, in or on the commodities in table 2 to this [paragraph (a)(2)](#a-2) resulting from the application of the butoxyethyl ester of triclopyr, triethylamine salt of triclopyr, or choline salt of triclopyr. Compliance with the tolerance levels specified in table 2 to this [paragraph (a)(2)](#a-2) is to be determined by measuring the combined residues of triclopyr, 2-[(3,5,6-trichloro-2-pyridinyl)oxy]acetic acid, and its metabolite 3,5,6-trichloro-2-pyridinol (TCP), calculated as the stoichiometric equivalent of triclopyr in or on the commodity.
  - (3) Tolerances are established for residues of the herbicide triclopyr, including its metabolites and degradates, in or on the commodities in table 3 to this [paragraph (a)(3)](#a-3) resulting from the application of the butoxyethyl ester of triclopyr, triethylamine salt of triclopyr, or choline salt of triclopyr. Compliance with the tolerance levels specified in table 3 to this [paragraph (a)(3)](#a-3) is to be determined by measuring the combined residues of triclopyr (2-[(3,5,6-trichloro-2-pyridinyl)oxy]acetic acid) and its metabolites 3,5,6-trichloro-2-pyridinol (TCP) and 2-methoxy-3,5,6-trichloropyridine (TMP), calculated as the stoichiometric equivalent of triclopyr in or on the commodity.
- (b) **Section 18 emergency exemptions.** Time-limited tolerances specified in the following table are established for residues of the triclopyr (2-[(3,5,6-trichloro-2-pyridinyl)oxy]acetic acid), including its metabolites and degradates in or on the specified agricultural commodities, resulting from use of the pesticide pursuant to FIFRA [section 18](/cfr/40/18.md) emergency exemptions. The tolerances expire on the date specified in the table.
- (c) **Tolerances with regional registrations.** [Reserved]
- (d) **Indirect or inadvertent residues.** [Reserved]

## Notes

### Amendments

[50 FR 18486, May 1, 1985, as amended at 55 FR 26440, June 28, 1990; 60 FR 4095, Jan. 20, 1995; 62 FR 46894, Sept. 5, 1997; 63 FR 45406, Aug. 26, 1998; 67 FR 35048, May 17, 2002; 67 FR 58725, Sept. 18, 2002; 72 FR 41931, Aug. 1, 2007; 80 FR 72599, Nov. 20, 2015; 81 FR 9359, Feb. 25, 2016; 82 FR 26603, June 8, 2017; 86 FR 8703, Feb. 9, 2021; 88 FR 75506, Nov. 3, 2023; 89 FR 14594, Feb. 28, 2024; 90 FR 31893, July 16, 2025; 91 FR 8107, 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

[50 FR 18486, May 1, 1985, as amended at 55 FR 26440, June 28, 1990; 60 FR 4095, Jan. 20, 1995; 62 FR 46894, Sept. 5, 1997; 63 FR 45406, Aug. 26, 1998; 67 FR 35048, May 17, 2002; 67 FR 58725, Sept. 18, 2002; 72 FR 41931, Aug. 1, 2007; 80 FR 72599, Nov. 20, 2015; 81 FR 9359, Feb. 25, 2016; 82 FR 26603, June 8, 2017; 86 FR 8703, Feb. 9, 2021; 88 FR 75506, Nov. 3, 2023; 89 FR 14594, Feb. 28, 2024; 90 FR 31893, July 16, 2025; 91 FR 8107, Feb. 20, 2026]