Section 180.441 - Quizalofop ethyl; tolerances for residues(a)General.(1) Tolerances are established for residues of the herbicide quizalofop ethyl, including its metabolites and degradates, in or on the commodities in the following table. Compliance with the tolerance levels specified in the following table is to be determined by measuring only those quizalofop ethyl residues convertible to 2-methoxy-6-chloroquinoxaline, expressed as the stoichiometric equivalent of quizalofop ethyl, in or on the commodity. Table 1 to Paragraph (a)(1)
| Commodity | Parts per
million |
| Barley, grain | 0.05 |
| Barley, hay | 0.05 |
| Barley, straw | 0.05 |
| Bean, dry, seed | 0.4 |
| Bean, succulent | 0.25 |
| Beet, sugar, molasses | 0.2 |
| Beet, sugar, roots | 0.1 |
| Beet, sugar, tops | 0.5 |
| Brassica carinata, meal | 2 |
| Brassica carinata, seed | 1.5 |
| Corn, field, forage | 0.02 |
| Corn, field, grain | 0.02 |
| Corn, field, stover | 0.03 |
| Cottonseed subgroup 20C | 0.1 |
| Cowpea, forage | 3.0 |
| Cowpea, hay | 3.0 |
| Crambe, meal | 2.0 |
| Flax, seed | 0.05 |
| Fruit, pome, group 11-10 | 0.1 |
| Fruit, small, vine climbing, except fuzzy kiwifruit, subgroup 13-07F | 0.1 |
| Fruit, stone, group 12-12 | 0.1 |
| Gold of pleasure, meal | 2.0 |
| Lentil, seed | 0.05 |
| Pea, dry | 0.25 |
| Pea, field, hay | 3.0 |
| Pea, field, vines | 3.0 |
| Pea, succulent | 0.3 |
| Pennycress, seed | 1.5 |
| Peppermint, tops | 2.0 |
| Rapeseed, meal | 2.0 |
| Rapeseed subgroup 20A, except flax, seed | 1.5 |
| Rice, grain | 0.05 |
| Sorghum, grain, aspirated grain fractions | 1.0 |
| Sorghum, grain, forage | 0.20 |
| Sorghum, grain, grain | 0.20 |
| Sorghum, grain, stover | 0.30 |
| Soybean, flour | 0.5 |
| Soybean, hulls | 0.02 |
| Soybean, meal | 0.5 |
| Soybean, seed | 0.05 |
| Spearmint, tops | 2.0 |
| Sunflower subgroup 20B | 3 |
| Wheat, forage | 2.0 |
| Wheat, germ | 0.40 |
| Wheat, grain | 0.05 |
| Wheat, hay | 2.0 |
| Wheat, milled byproducts | 0.40 |
| Wheat, straw | 0.80 |
(2) Tolerances are established for residues of the herbicide quizalofop ethyl, including its metabolites and degradates, in or on the commodities in the following table. Compliance with the tolerance levels specified in the following table is to be determined by measuring only those quizalofop ethyl residues convertible to quizalofop (2-[4-(6-chloroquinoxalin-2-yl-oxy)phenoxy]propanoic acid), expressed as quizalofop, in or on the commodity. | Commodity | Parts per million |
| Cattle, fat | 0.05 |
| Cattle, meat | 0.02 |
| Cattle, meat byproducts | 0.05 |
| Egg | 0.02 |
| Goat, fat | 0.05 |
| Goat, meat | 0.02 |
| Goat, meat byproducts | 0.05 |
| Hog, fat | 0.05 |
| Hog, meat | 0.02 |
| Hog, meat byproducts | 0.05 |
| Horse, fat | 0.05 |
| Horse, meat | 0.02 |
| Horse, meat byproducts | 0.05 |
| Milk | 0.01 |
| Milk, fat | 0.25 |
| Poultry, fat | 0.05 |
| Poultry, meat | 0.02 |
| Poultry, meat byproducts | 0.05 |
| Sheep, fat | 0.05 |
| Sheep, meat | 0.02 |
| Sheep, meat byproducts | 0.05 |
(3) Tolerances are established for residues of the herbicide quizalofop-P-ethyl, including its metabolites and degradates, in or on the commodities in the following table. Compliance with the tolerance levels specified in the following table is to be determined by measuring quizalofop ethyl and quizalofop acid, expressed as the stoichiometric equivalent of quizalofop ethyl, in or on the commodity. | Commodity | Parts per
million |
| Fish-shellfish, crustacean | 0.04 |
(b)Section 18 emergency exemptions. [Reserved](c)Tolerances with regional registrations. Tolerances with regional registration are established for residues of the herbicide quizalofop ethyl, including its metabolites and degradates, in or on the commodities in the following table. Compliance with the tolerance levels specified in the following table is to be determined by measuring only those quizalofop ethyl residues convertible to 2-methoxy-6-chloroquinoxaline, expressed as the stoichiometric equivalent of quizalofop ethyl, in or on the commodity. | Commodity | Parts per million |
| Pineapple | 0.1 |
(d)Indirect or inadvertent residues. [Reserved]63 FR 32759, June 16, 1998, as amended at 70 FR 7870 , Feb. 16, 2005; 71 FR 56378 , Sept. 27, 2006; 76 FR 56045 , Sept. 15, 2010; 77 FR 23630 , Apr. 20, 2012; 80 FR 72599 , Nov. 20, 2015; 81 FR 86586 , Dec. 1, 2016; 83 FR 7115 , Feb. 20, 2018; 83 FR 8011 , Feb. 23, 2018; 86 FR 13199 , Mar. 8, 2021 80 FR 72593 , 5/18/2016; 81 FR 86586 , 12/1/2016; 83 FR 7115 , 2/20/2018; 83 FR 8011 , 2/23/2018; 86 FR 13199 , 3/8/2021