Regulations last checked for updates: Oct 02, 2026

Title 40 - Protection of Environment last revised: Sep 29, 2026
§ 180.436 - Cyfluthrin and the isomer beta-cyfluthrin; tolerances for residues.

(a) General. (1) Tolerances are established for residues of cyfluthrin, including its metabolites and degradates, in or on the commodities in table 1 to this paragraph (a)(1). Compliance with the tolerance levels specified in table 1 to this paragraph (a)(1) is to be determined by measuring only cyfluthrin, (cyano(4-fluoro-3-phenoxyphenyl)methyl-3-(2,2-dichloroethenyl)-2,2dimethyl-cyclopropane-carboxylate, in or on the commodity.

Table 1 to Paragraph (a)(1)

Commodity Parts per million
Alfalfa5
Alfalfa, forage5
Alfalfa, hay13
Almond, hulls0.5
Barley, bran0.5
Barley, grain0.15
Beet, sugar, dried pulp1
Beet, sugar, roots0.1
Brassica, leafy greens, subgroup 4-16B7
Buckwheat, grain0.15
Carrot, roots0.2
Cattle, fat2
Cattle, meat0.1
Cattle, meat byproducts0.1
Celtuce6
Citrus, dried pulp0.3
Citrus, oil0.3
Corn, field, grain0.05
Corn, pop, grain0.05
Corn, sweet, kernel plus cob with husks removed0.05
Cotton, hulls2
Cotton, refined oil2
Cotton, undelinted seed1
Egg0.01
Fennel, florence, fresh leaves and stalk6
Fruit, citrus, group 10-100.3
Fruit, pome, group 11-100.5
Fruit, stone, group 12-120.3
Goat, fat2
Goat, meat0.05
Goat, meat byproducts0.05
Grain, aspirated fractions150
Grain, cereal, forage, fodder and hay, group 16, forage, except rice25
Grain, cereal, forage, fodder and hay, group 16, hay, except rice6
Grain, cereal, forage, fodder and hay, group 16, stover, except rice30
Grain, cereal, forage, fodder and hay, group 16, straw, except rice7
Grape1
Grape, raisin3.5
Grass, forage, fodder and hay, group 17, forage12
Grass, forage, fodder and hay, group 17, hay50
Hog, fat0.5
Hog, meat0.01
Hog, meat byproducts0.02
Hop, dried cones20
Hop, vines4
Horse, fat2
Horse, meat0.05
Horse, meat byproducts0.05
Kohlrabi2.5
Leaf petiole vegetable subgroup 22B6
Leafy greens subgroup 4-16A6
Milk0.2
Milk, fat5
Millet, grain0.15
Nut, tree, group 14-120.01
Oat, bran0.5
Oat, grain0.15
Pea and bean, dried shelled, except soybean, subgroup 6C0.15
Pea, dry, seed0.15
Pea, southern, succulent0.25
Peanut0.01
Peanut, hay6
Poultry, fat0.01
Poultry, meat0.01
Poultry, meat byproducts0.01
Radish, roots1
Rye, bran0.5
Rye, grain0.15
Sheep, fat2
Sheep, meat0.05
Sheep, meat byproducts0.05
Sorghum, grain, grain3.5
Soybean, forage8
Soybean, hay4
Soybean, seed0.03
Sugarcane, cane0.05
Sugarcane, molasses0.2
Sunflower, forage5
Sunflower, seed0.02
Teosinte, grain0.05
Tomato, dry pomace5
Tomato, paste0.5
Tomato, wet pomace5
Triticale, grain0.15
Vegetable, brassica, head and stem, group 5-162.5
Vegetable, cucurbit, group 90.1
Vegetable, fruiting, group 8-100.5
Vegetable, tuberous and corm, subgroup 1C0.01
Wheat, bran0.5
Wheat, grain0.15
Wheat, shorts0.5

(2) A tolerance of 0.05 parts per million is established for residues of cyfluthrin, including its metabolites and degradates, in or on all food and feed items when cyfluthrin is used in food or feed handling establishments. Compliance with the tolerance level specified is to be determined by measuring only cyfluthrin, (cyano(4-fluoro-3-phenoxyphenyl)methyl-3-(2,2-dichloroethenyl)-2,2dimethyl-cyclopropane-carboxylate, in or on the commodity.

(3) Tolerances are established for residues of beta-cyfluthrin, including its metabolites and degradates, in or on the commodities in table 2 to this paragraph (a)(3). Compliance with the tolerance levels specified in table 2 to this paragraph (a)(3) is to be determined by measuring only the sum of beta-cyfluthrin, cyano(4-fluoro-3-phenoxyphenyl)methyl-3-(2,2-dichloroethenyl)-2,2-dimethyl-cyclopropanecarboxylate [mixture comprising the enantiomeric pair (R)-α-cyano-4-fluoro-3-phenoxybenzyl (1S,3S)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate and (S)-α-cyano-4-fluoro-3-phenoxybenzyl (1R,3R)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate with the enantiomeric pair (R)-α-cyano-4-fluoro-3-phenoxybenzyl (1S,3R)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate and (S)-α-cyano-4-fluoro-3-phenoxybenzyl (1R,3S)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate], in or on the commodity.

Table 2 to Paragraph (a)(3)

Commodity Parts per million
Alfalfa5
Alfalfa, forage5
Alfalfa, hay13
Almond, hulls0.5
Barley, bran0.5
Barley, grain0.15
Beet, sugar, dried pulp1
Beet, sugar, roots0.1
Brassica, leafy greens, subgroup 4-16B7
Buckwheat, grain0.15
Carrot, roots0.2
Cattle, fat2
Cattle, meat0.1
Cattle, meat byproducts0.1
Celtuce6
Citrus, dried pulp0.3
Citrus, oil0.3
Corn, field, grain0.05
Corn, pop, grain0.05
Corn, sweet, kernel plus cob with husks removed0.05
Cotton, hulls2
Cotton, refined oil2
Cotton, undelinted seed1
Egg0.01
Fennel, florence, fresh leaves and stalk6
Fruit, citrus, group 10-100.3
Fruit, pome, group 11-100.5
Fruit, stone, group 12-120.3
Goat, fat2
Goat, meat0.05
Goat, meat byproducts0.05
Grain, aspirated fractions150
Grain, cereal, forage, fodder and hay, group 16, forage, except rice25
Grain, cereal, forage, fodder and hay, group 16, hay, except rice6
Grain, cereal, forage, fodder and hay, group 16, stover, except rice30
Grain, cereal, forage, fodder and hay, group 16, straw, except rice7
Grape1
Grape, raisin3.5
Grass, forage, fodder and hay, group 17, forage12
Grass, forage, fodder and hay, group 17, hay50
Hog, fat0.5
Hog, meat0.01
Hog, meat byproducts0.02
Hop, dried cones20
Hop, vines4
Horse, fat2
Horse, meat0.05
Horse, meat byproducts0.05
Kohlrabi2.5
Leaf petiole vegetable subgroup 22B6
Leafy greens subgroup 4-16A6
Milk0.2
Milk, fat5
Millet, grain0.15
Nut, tree, group 14-120.01
Oat, bran0.5
Oat, grain0.15
Pea and bean, dried shelled, except soybean, subgroup 6C0.15
Pea, dry, seed0.15
Pea, southern, succulent0.25
Peanut0.01
Peanut, hay6
Poultry, fat0.01
Poultry, meat0.01
Poultry, meat byproducts0.01
Radish, roots1
Rye, bran0.5
Rye, grain0.15
Sheep, fat2
Sheep, meat0.05
Sheep, meat byproducts0.05
Sorghum, grain, grain3.5
Soybean, forage8
Soybean, hay4
Soybean, seed0.03
Sugarcane, cane0.05
Sugarcane, molasses0.2
Sunflower, forage5
Sunflower, seed0.02
Teosinte, grain0.05
Tomato, paste0.5
Tomato, pomace5
Triticale, grain0.15
Vegetable, brassica, head and stem, group 5-162.5
Vegetable, cucurbit, group 90.1
Vegetable, fruiting, group 8-100.5
Vegetable, tuberous and corm, subgroup 1C0.01
Wheat, bran0.5
Wheat, grain0.15
Wheat, shorts0.5

(b) Section 18 emergency exemptions. [Reserved]

(c) Tolerances with regional registrations. [Reserved]

(d) Indirect or inadvertent residues. [Reserved]

[53 FR 1924, Jan. 25, 1988] Editorial Note:For Federal Register citations affecting § 180.436, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.
authority: 21 U.S.C. 321(q), 346a and 371
source: 36 FR 22540, Nov. 25, 1971, unless otherwise noted.
cite as: 40 CFR 180.436