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21 U.S.C. 321(q), 346a and 371.
36 FR 22540, Nov. 25, 1971, unless otherwise noted.
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Nomenclature changes to part 180 appear at 62 FR 66023, Dec. 17, 1997.
Nomenclature changes to subpart C of part 180 appear at 67 FR 41803, June 19, 2002; 67 FR 42393, June 21, 2002; 68 FR 39430, July 1, 2003; 71 FR 74804, Dec. 13, 2006; 72 FR 53137, Sept. 18, 2007; 72 FR 61536, Oct. 31, 2007; 73 FR 60155, Oct. 10, 2008; 75 FR 56014, Sept. 15, 2010; and 76 FR 34885, June 15, 2011.
(a) General.
(1) Tolerances are established for residues of the herbicide, flufenpyr-ethyl; acetic acid, [2-chloro-4-fluoro-5-[5-methyl-6-oxo-4-(trifluoromethyl)-1-(6H)-pyridazinyl]-phenoxy]-ethyl ester], in or on the commodities in Table 1 to paragraph (a)(1).
| Commodity | Parts per
million |
|---|---|
| Corn, field, grain 1 | 0.01 |
| Soybean, seed 1 | 0.01 |
| Sugarcane, cane 1 | 0.01 |
| 1 This tolerance expires on August 26, 2026. | |
(2) Tolerances are established for residues of the herbicide flufenpyr-ethyl; acetic acid, [2-chloro-4-fluoro-5-[5-methyl-6-oxo-4-(trifluoromethyl)-1-(6H)-pyridazinyl]-phenoxy]-ethyl ester], and its metabolite, S-3153 acid-4-OH; [2-chloro-4-hydroxy-5-[5-methyl-6- oxo-4-(trifluoromethyl)-1-(6H)-pyridazinyl]-phenoxy]-acetic acid, free and conjugated, in or on the commodities in Table 2 to paragraph (a)(2).
| Commodity | Parts per
million |
|---|---|
| Corn, field, forage 1 | 0.05 |
| Corn, field, stover 1 | 0.05 |
| 1 This tolerance expires on August 26, 2026. | |
(b) Section 18 emergency exemptions. [Reserved]
(c) Tolerances with regional registrations. [Reserved]
(d) Indirect or inadvertent residues. [Reserved]
[68 FR 54842, Sept. 19, 2003, as amended at 91 FR 9727, Feb. 27, 2026]