Regulations last checked for updates: Feb 12, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026
§ 180.660 - Pyriofenone; tolerances for residues.

(a) General. Tolerances are established for residues of the fungicide pyriofenone, including its metabolites and degradates, in or on the following commodities listed in the table. Compliance with the tolerance levels specified in the table is to be determined by measuring only pyriofenone, (5-chloro-2-methoxy-4-methyl-3-pyridinyl)(2,3,4-trimethoxy-6-methylphenyl) methanone, in or on the following commodities:

Table 1 to Paragraph (a)

Commodity Parts per
million
Apple 0.3
Apple, wet pomace 0.5
Berry, low growing, subgroup 13-07G, except cranberry 2
Bushberry subgroup 13-07B1.5
Caneberry subgroup 13-07A0.90
Cherry subgroup 12-12A 1.5
Fruit, small vine climbing subgroup 13-07E, except grape1.5
Grape0.8
Grape, raisin2.5
Pepper/eggplant subgroup 8-10B2
Tomato subgroup 8-10A0.2
Tomato subgroup 8-10A 10.3
Vegetables, cucurbit, crop group 90.30

1 This tolerance expires on January 5, 2023.

(b) Section 18 emergency exemptions. [Reserved]

(c) Tolerances with regional registrations. [Reserved]

(d) Indirect or inadvertent residues. [Reserved]

[77 FR 13506, Mar. 7, 2012, as amended at 82 FR 18240, Apr. 18, 2017; 84 FR 24987, May 30, 2019; 86 FR 17548, Apr. 5, 2021; 87 FR 39755, July 5, 2022; 91 FR 1396, Jan. 14, 2026]
authority: 21 U.S.C. 321(q), 346a and 371
source: 36 FR 22540, Nov. 25, 1971, unless otherwise noted.
cite as: 40 CFR 180.660