Regulations last checked for updates: Oct 02, 2026

Title 40 - Protection of Environment last revised: Sep 29, 2026
§ 180.430 - Fenoxaprop-ethyl; tolerances for residues.

(a) General. Tolerances are established for residues of the herbicide fenoxaprop-ethyl, including its metabolites and degradates, in or on the commodities in the table in this paragraph. Compliance with the tolerance levels specified in this paragraph is to be determined by measuring only the sum of fenoxaprop-ethyl, (±)-ethyl 2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoate, and its metabolites, 2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoic acid and 6-chloro-2,3-dihydrobenzoxazol-2-one, calculated as the stoichiometric equivalent of fenoxaprop-ethyl, in or on the commodity.

Table 1 to Paragraph (a)

Commodity Parts per million
Barley, grain0.05
Barley, straw0.1
Cattle, fat0.05
Cattle, meat byproducts0.05
Cattle, meat0.05
Cotton, undelinted seed0.05
Goat, fat0.05
Goat, meat byproducts0.05
Goat, meat0.05
Hog, fat0.05
Hog, meat byproducts0.05
Hog, meat0.05
Horse, fat0.05
Horse, meat byproducts0.05
Horse, meat0.05
Milk0.02
Peanut0.05
Peanut, hulls 10.05
Rice, grain0.05
Sheep, fat0.05
Sheep, meat byproducts0.05
Sheep, meat0.05
Soybean, seed0.05
Wheat, grain0.05
Wheat, straw0.50

1 This tolerance expires on August 26, 2026.

(b) [Reserved]

(c) Tolerances with regional registrations. Tolerances with regional registration, as defined in § 180.1(l), are established for residues of the herbicide fenoxaprop-ethyl, including its metabolites and degradates, in or on the commodities in the table in this paragraph when fenoxaprop-ethyl is used in the states of Oregon, Washington, and Utah. Compliance with the tolerance levels specified in this paragraph is to be determined by measuring only the sum of fenoxaprop-ethyl, (±)-ethyl 2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoate, and its metabolites, 2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoic acid and 6-chloro-2,3-dihydrobenzoxazol-2-one, calculated as the stoichiometric equivalent of fenoxaprop-ethyl, in or on the commodity

Table 2 to Paragraph (c)

Commodity Parts per
million
Grass, hay0.09

(d) Indirect or inadvertent residues. [Reserved]

[63 FR 1377, Jan. 9, 1998, as amended at 63 FR 19837, Apr. 22, 1998; 73 FR 33718, June 13, 2008; 75 FR 80346, Dec. 22, 2010; 76 FR 23495, Apr. 27, 2011; 78 FR 78748, Dec. 27, 2013; 79 FR 26164, May 7, 2014; 91 FR 9727, Feb. 27, 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 180.430