40 CFR § 180.439 - Thifensulfuron methyl; tolerances for residues.

---
identifier: "/us/cfr/t40/s180.439"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.439 - Thifensulfuron methyl; tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.439"
section_name: "Thifensulfuron methyl; 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"
---


# 180.439 Thifensulfuron methyl; tolerances for residues.

(a) *General.* Tolerances are established for residues of thifensulfuron methyl, including its metabolites and degradates, in or on the commodities listed in the following table [below]. Compliance with the tolerance levels specified in the following table [below] is to be determined by measuring only thifensulfuron methyl (methyl 3-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino] sulfonyl]-2-thiophenecarboxylate).

| Commodity | Parts per million |
| --- | --- |
| Barley, grain | 0.05 |
| Barley, hay | 0.8 |
| Barley, straw | 0.10 |
| Canola, seed | 0.02 |
| Chicory, roots | 0.01 |
| Chicory, tops | 0.01 |
| Corn, field, forage | 0.10 |
| Corn, field, grain | 0.05 |
| Corn, field, stover | 0.10 |
| Cotton, gin byproducts | 0.02 |
| Cotton, undelinted seed | 0.02 |
| Flax, seed | 0.02 |
| Oat, forage | 0.2 |
| Oat, grain | 0.05 |
| Oat, hay | 0.05 |
| Oat, straw | 0.10 |
| Rice, grain | 0.05 |
| Sorghum, grain, forage | 0.05 |
| Sorghum, grain, grain | 0.05 |
| Sorghum, grain, stover | 0.05 |
| Soybean | 0.10 |
| Wheat, forage | 2.5 |
| Wheat, grain | 0.05 |
| Wheat, hay | 0.7 |
| Wheat, straw | 0.10 |

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

(c) *Tolerances with regional registrations.* Tolerances are established for residues of thifensulfuron methyl, including its metabolites and degradates, in or on the commodities listed in the following table [below]. Compliance with the tolerance levels specified in the following table [below] is to be determined by measuring only thifensulfuron methyl (methyl 3-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino] sulfonyl]-2-thiophenecarboxylate).

| Commodity | Parts per million |
| --- | --- |
| Safflower, seed | 0.05 |

(d) *Indirect or inadvertent residues.* [Reserved]

[69 FR 55982, Sept. 17, 2004, as amended at 69 FR 63957, Nov. 3, 2004; 72 FR 13184, Mar. 21, 2007; 73 FR 47075, Aug. 13, 2008; 75 FR 19277, Apr. 14, 2010; 77 FR 52240, Aug. 29, 2012; 80 FR 72599, Nov. 20, 2015]