40 CFR § 180.592 - Butafenacil; tolerances for residues.

---
identifier: "/us/cfr/t40/s180.592"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.592 - Butafenacil; tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.592"
section_name: "Butafenacil; 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"
---


# 180.592 Butafenacil; tolerances for residues.

(a) *General.* (1) Tolerances are established for residues of the herbicide butafenacil, (1,1-dimethyl-2-oxo-2-(2-propenyloxy)ethyl 2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2*H*)-pyrimidinyl] benzoate) in or on the following raw agricultural commodities:

| Commodity | Parts per million |
| --- | --- |
| Cotton, gin byproducts | 10 |
| Cotton, undelinted seed | 0.50 |

(2) Tolerances are established for residues of the herbicide butafenacil, (1,1-dimethyl-2-oxo-2-(2-propenyloxy)ethyl 2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2*H*)-pyrimidinyl] benzoate) and its metabolite CGA-293731 (1-carboxy-1-methylethyl 2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2*H*)-pyrimidinyl] benzoate), in or on the following livestock commodities:

| Commodity | Parts per million |
| --- | --- |
| Cattle, kidney | 0.05 |
| Cattle, liver | 0.50 |
| Goat, kidney | 0.05 |
| Goat, liver | 0.50 |
| Hog, kidney | 0.05 |
| Hog, liver | 0.50 |
| Horse, kidney | 0.05 |
| Horse, liver | 0.50 |
| Sheep, kidney | 0.05 |
| Sheep, liver | 0.50 |

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

(c) *Tolerances with regional registrations.* [Reserved]

(d) *Indirect and inadvertant residues.* [Reserved]

[68 FR 54827, Sept. 19, 2003]