Section 180.570 - Isoxadifen-ethyl; tolerances for residues(a)General.(1) Tolerances are established for residues of isoxadifen-ethyl (ethyl 5,5-diphenyl-2-isoxazoline-3-carboxylate, (CAS No. 163520-33-0), and its metabolite: 4,5-dihydro-5,5-diphenyl-3-isoxazolecarboxylic acid, when used as an inert ingredient (safener) in or on the following raw agricultural commodities: | Commodity | Parts per million |
| Corn, field, forage | 0.20 |
| Corn, field, grain | 0.08 |
| Corn, field, stover | 0.40 |
| Corn, oil | 0.50 |
| Corn, pop, grain | 0.04 |
| Corn, pop, stover | 0.25 |
| Corn, sweet, forage | 0.30 |
| Corn, sweet, kernel plus cob with husk removed | 0.04 |
| Corn, sweet, stover | 0.45 |
(2) Tolerances are established for the residues of isoxadifen-ethyl (3-isoxazolecarboxylic acid, 4,5-dihydro-5,5-diphenyl-, ethyl ester (CAS No. 164520-33-0)), and its metabolites 4,5-dihydro-5,5-diphenyl-3-isoxazolecarboxylic acid and [BETA]-hydroxy-[BETA]-benzenepropanenitrile when used as an inert ingredient (safener) in or on the following raw agricultural commodities: | Commodity | Parts per million |
| Rice, grain | 0.10 |
| Rice, hulls | 0.50 |
(b)Section 18 emergency exemptions. [Reserved](c)Tolerances with regional registrations. [Reserved](d)Indirect or inadvertent residues. [Reserved]66 FR 33187, June 21, 2001, as amended at 66 FR 40141, Aug. 2, 2001; 67 FR 12878, Mar. 20, 2002; 69 FR 29890, May 26, 2004; 72 FR 63997, Nov. 14, 2007; 80 FR 72599, Nov. 20, 2016