Regulations last checked for updates: Oct 02, 2026

Title 40 - Protection of Environment last revised: Sep 29, 2026
§ 180.345 - Ethofumesate; tolerances for residues.

(a) General. Tolerance are established for residues of the herbicide ethofumesate, including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerance levels specified below is to be determined by measuring only the sum of ethofumesate, 2-ethoxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonate, and its metabolites 2-hydroxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonate, and 2,3-dihydro-3,3-dimethyl-2-oxo-5-benzofuranylmethanesulfonate, calculated as the stoichiometric equivalent of ethofumesate, in or on the following food commodities.

Table 1 to Paragraph (a)

Commodity Parts per million
Beet, garden, leaves5
Beet, garden, roots0.5
Beet, sugar, molasses2
Beet, sugar, roots1.5
Beet, sugar, tops 14
Cattle, fat0.05
Cattle, meat0.05
Cattle, meat byproducts0.05
Garlic, bulb0.25
Goat, fat0.05
Goat, meat0.05
Goat, meat byproducts0.05
Grass, forage, fodder and hay, group 17, straw1
Horse, fat0.05
Horse, meat0.05
Horse, meat byproducts0.05
Onion, bulb0.25
Shallot, bulb0.25
Shallot, fresh leaves0.25
Sheep, fat0.05
Sheep, meat0.05
Sheep, meat byproducts0.05

1 This tolerance expires on October 19, 2026.

(b) Section 18 emergency exemptions. [Reserved]

(c) Tolerances with regional registrations. Tolerances with a regional registration, as defined in § 180.1(l) are established for residues of the herbicide ethofumesate, including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerance levels specified is to be determined by measuring only the sum of ethofumesate, 2-ethoxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonate, and its metabolites 2-hydroxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonate, and 2,3-dihydro-3,3-dimethyl-2-oxo-5-benzofuranylmethanesulfonate, calculated as the stoichiometric equivalent of ethofumesate, in or on the raw agricultural commodities.

Table 2 to Paragraph (c)

Commodity Parts per
million
Carrot, roots7

(d) Indirect or inadvertent residues. Tolerances are established for the combined indirect or inadvertent residues of the herbicide ethofumesate, including its metabolites and degradates, in or on the commodities in Table 3 to this paragraph (d). Compliance with the tolerance levels specified in Table 3 to this paragraph (d) is to be determined by measuring only the sum of ethofumesate, 2-ethoxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonate, and its metabolites 2-hydroxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonate, and 2,3-dihydro-3,3-dimethyl-2-oxo-5-benzofuranylmethanesulfonate, calculated as the stoichiometric equivalent of ethofumesate, in or on the commodity.

Table 3 to Paragraph (d)

Commodity Parts per
million
Animal feed, nongrass, group 181.5
Grain, cereal, forage, hay, stover, and straw, group 16-221.5
Vegetable, legume, forage and hay, group 7-220.5
[63 FR 34828, June 26, 1998, as amended at 71 FR 51516, Aug. 30, 2006; 72 FR 52019, Sept. 12, 2007; 82 FR 57158, Dec. 4, 2017; 91 FR 21388, Apr. 22, 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 180.345