40 CFR § 180.527 - Flufenacet, N-(4-fluorophenyl)-N-(1-methylethyl)-2-[[5-(trifluoromethyl)-1, 3, 4-thiadiazol-2-yl] oxy]acetamide and its metabolites containing the 4-fluoro-N-methylethyl benzenamine tolerances for residues.

---
identifier: "/us/cfr/t40/s180.527"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.527 - Flufenacet, N-(4-fluorophenyl)-N-(1-methylethyl)-2-[[5-(trifluoromethyl)-1, 3, 4-thiadiazol-2-yl] oxy]acetamide and its metabolites containing the 4-fluoro-N-methylethyl benzenamine tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.527"
section_name: "Flufenacet, N-(4-fluorophenyl)-N-(1-methylethyl)-2-[[5-(trifluoromethyl)-1, 3, 4-thiadiazol-2-yl] oxy]acetamide and its metabolites containing the 4-fluoro-N-methylethyl benzenamine tolerances for residues."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "E"
subchapter_name: "PESTICIDE PROGRAMS"
part_number: "180"
part_name: "TOLERANCES AND EXEMPTIONS FOR PESTICIDE CHEMICAL RESIDUES IN FOOD"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321(q), 346a and 371."
regulatory_source: "36 FR 22540, Nov. 25, 1971, unless otherwise noted."
cfr_part: "180"
---


# 180.527 Flufenacet, N-(4-fluorophenyl)-N-(1-methylethyl)-2-[[5-(trifluoromethyl)-1, 3, 4-thiadiazol-2-yl] oxy]acetamide and its metabolites containing the 4-fluoro-N-methylethyl benzenamine tolerances for residues.

(a) *General.* Tolerances are established for the combined residues of the herbicide flufenacet, *N*-(4-fluorophenyl)-*N*-(1-methylethyl)-2-[[5-(trifluoromethyl)-1, 3, 4-thiadiazol-2-yl] oxy]acetamide and its metabolites containing the 4-fluoro-*N*-methylethyl benzenamine moiety in or on the following commodities.

| Commodity | Parts per million |
| --- | --- |
| Cattle, kidney | 0.05 |
| Corn, field, forage | 0.4 |
| Corn, field, grain | 0.05 |
| Corn, field, stover | 0.4 |
| Corn, sweet, forage | 0.45 |
| Corn, sweet, kernel plus cob with husks removed | 0.05 |
| Corn, sweet, stover | 0.30 |
| Goat, kidney | 0.05 |
| Hog, kidney | 0.05 |
| Horse, kidney | 0.05 |
| Sheep, kidney | 0.05 |
| Soybean, seed | 0.1 |
| Wheat, bran | 0.80 |
| Wheat, forage | 6.0 |
| Wheat, grain | 0.60 |
| Wheat, hay | 1.2 |
| Wheat, straw | 0.35 |

(b) *Section 18 emergency exemptions.* [Reserved]

(c) *Tolerances with regional registrations.* Tolerances are established for combined residues of flufenacet, *N*-(4-fluorophenyl)-*N*-(1-methylethyl)-2-[[5-(trifluoromethyl)-1, 3, 4-thiadiazol-2-yl] oxy]acetamide, and its metabolites containing the 4-fluoro-*N*-methylethyl benzenamine moiety, with regional registration.

| Commodity | Parts per million |
| --- | --- |
| Grass, forage | 7.0 |
| Grass, hay | 0.4 |

(d) *Indirect or inadvertent residues.* Tolerances are established for indirect or inadvertent residues of the herbicide flufenacet, *N*-(4-fluorophenyl)-*N*-(1-methylethyl)-2-[[5-(trifluoromethyl)-1,3,4-thiadiazol-2-yl]oxy]acetamide and its metabolites containing the 4-fluoro-*N*-methylethyl benzenamine moiety in or on the following raw agricultural commodities when present therein as a result of application of flufenacet to the growing crops in paragraph (a) of this section.

| Commodity | Parts per million |
| --- | --- |
| Alfalfa, forage | 0.1 |
| Alfalfa, hay | 0.1 |
| Alfalfa, seed | 0.1 |
| Clover, forage | 0.1 |
| Clover, hay | 0.1 |
| Grain, cereal, group 15, except rice | 0.1 |
| Grain, cereal, forage, fodder, and straw, group 16, except rice | 0.1 |
| Grass, forage, fodder, and hay, group 17 | 0.1 |

[63 FR 26473, May 13, 1998, as amended at 63 FR 50791, Sept. 23, 1998; 64 FR 42846, Aug. 6, 1999; 65 FR 64366, Oct. 27, 2000; 68 FR 2247, Jan. 16, 2003; 68 FR 37759, June 25, 2003; 70 FR 37696, June 30, 2005; 71 FR 76200, Dec. 20, 2006; 72 FR 26310, May 9, 2007]