40 CFR § 180.729 - Cyclobutrifluram; tolerances for residues.

---
identifier: "/us/cfr/t40/s180.729"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.729 - Cyclobutrifluram; tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.729"
section_name: "Cyclobutrifluram; 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"
---


# 180.729 Cyclobutrifluram; tolerances for residues.

(a) *General.* Tolerances are established for residues of the nematicide/fungicide cyclobutrifluram, including its metabolites and degradates, in or on the plant commodities in table 1 to this paragraph (a). Compliance with the tolerance levels specified in table 1 is to be determined by measuring the sum of cyclobutrifluram (*rel-N*-[(1*R,*2*R*)-2-(2,4-dichlorophenyl)cyclobutyl]-2-(trifluoromethyl)-3-pyridinecarboxamide) and its metabolite 2-trifluoromethyl-nicotinamide, calculated as the stoichiometric equivalent of cyclobutrifluram in or on plant commodities.

Table 1 to Paragraph **(a)**

| Commodity | Parts
per million |
| --- | --- |
| Cotton, gin byproducts | 0.02 |
| Cotton, undelinted seed | 0.02 |
| Lettuce, leaf | 0.06 |
| Soybean, seed | 0.03 |

(b) [Reserved]

[90 FR 49259, Nov. 5, 2025]