Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
§ 180.184 - Linuron; tolerances for residues.

(a) General. Tolerances are established for residues of the herbicide linuron (3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea), 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 those linuron residues convertible to 3,4-dichloroaniline, calculated as the stoichiometric equivalent of linuron, in or on the commodity:

Table 1 to Paragraph (a)

Commodity Parts per million
Alfalfa, forage1
Alfalfa, hay3
Asparagus7.0
Carrot, roots1.0
Cattle, fat0.2
Cattle, kidney2.0
Cattle, liver2.0
Cattle, meat0.1
Cattle, meat byproducts except kidney and liver0.1
Celeriac1.0
Cilantro, dried leaves10
Cilantro, fresh leaves3.0
Coriander, seed0.01
Corn, field, forage1.0
Corn, field, grain0.1
Corn, field, stover6.0
Corn, sweet, forage1.0
Corn, sweet, kernel plus cob with husks removed0.25
Corn, sweet, stover6.0
Cotton, gin byproducts5.0
Cotton, undelinted seed0.25
Dill, oil2.0
Dill, seed0.5
Dillweed, dried leaves5.0
Dillweed, fresh leaves1.5
Goat, fat0.2
Goat, kidney2.0
Goat, liver2.0
Goat, meat0.1
Goat, meat byproducts except kidney and liver0.1
Hog, fat0.05
Hog, meat0.05
Hog, meat byproducts0.1
Horse, fat0.2
Horse, kidney2.0
Horse, liver2.0
Horse, meat0.1
Horse, meat byproducts except kidney and liver0.1
Horseradish0.05
Milk0.05
Parsley, dried leaves9.0
Parsley, leaves4.0
Parsnip, roots0.05
Parsnip, tops0.05
Pea, dry, seed0.09
Rhubarb0.5
Sheep, fat0.2
Sheep, kidney2.0
Sheep, liver2.0
Sheep, meat0.1
Sheep, meat byproducts except kidney and liver0.1
Sorghum, grain, forage1.0
Sorghum, grain, grain0.25
Sorghum, grain, stover1.0
Soybean, seed1.0
Soybean, vegetable1.0

(b) Section 18 emergency exemptions. Time-limited tolerances are established for residues of the herbicide linuron [3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea], including its metabolites and degradates, in or on the commodities in the table below, resulting from use of the pesticide pursuant to FIFRA section 18 emergency exemptions. Compliance with the tolerance levels specified below is to be determined by measuring only those linuron residues convertible to 3.4-dichloroaniline, calculated as the stoichiometric equivalent of linuron, in or on the commodity. The tolerance expires and is revoked on the date specified in the table.

Commodity Parts per
million
Expiration/revocation date
Lentil0.112/31/14

(c) Tolerances with regional registrations. Tolerances with regional registrations, as defined in § 180.1(l), are established for residues of the herbicide linuron (3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea), 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 those linuron residues convertible to 3,4-dichloroaniline, calculated as the stoichiometric equivalent of linuron, in or on the commodity.

Commodity Parts per million
Celery0.5
Potato0.2
Wheat, forage0.5
Wheat, grain0.05
Wheat, hay0.5
Wheat, straw2.0

(d) Indirect or inadvertent residues. [Reserved]

[64 FR 41822, Aug. 2, 1999, as amended at 72 FR 37653, July 11, 2007; 73 FR 51727, Sept. 5, 2008; 76 FR 81396, Dec. 28, 2011; 79 FR 8307, Feb. 12, 2014; 89 FR 4200, Jan. 23, 2024]
authority: 21 U.S.C. 321(q), 346a and 371
source: 36 FR 22540, Nov. 25, 1971, unless otherwise noted.
cite as: 40 CFR 180.184