Regulations last checked for updates: Nov 25, 2024

Title 40 - Protection of Environment last revised: Nov 21, 2024
§ 180.500 - Imazapyr; tolerances for residues.

(a) General. Tolerances are established for residues of the herbicide, imazapyr, including its metabolites and degradates, in or on the commodities in the following table. Compliance with the tolerance levels specified in the following table is to be determined by measuring only the residues of imazapyr [2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-pyridinecarboxylic acid].

Table 1 to Paragraph (a)

Commodity Parts per million
Cattle, fat0.05
Cattle, kidney0.20
Cattle, meat0.05
Cattle, meat byproducts, except kidney0.05
Corn, field, forage0.05
Corn, field, grain0.05
Corn, field, stover0.05
Fish1.0
Goat, fat0.05
Goat, kidney0.20
Goat, meat0.05
Goats, meat byproducts, except kidney0.05
Grass, forage100
Grass, hay30
Horse, fat0.05
Horse, kidney0.20
Horse, meat0.05
Horse, meat byproducts, except kidney0.05
Lentil 10.2
Milk0.01
Rapeseed subgroup 20A 10.05
Rice, bran 10.15
Rice, grain 10.06
Sheep, fat0.05
Sheep, kidney0.20
Sheep, meat0.05
Sheep, meat byproducts, except kidney0.05
Shellfish0.10
Soybean, meal 14.5
Soybean, seed 14.0
Sunflower subgroup 20B 10.05

1 There are no U.S. registrations as of August 24, 2023.

(b) Section 18 emergency exemptions. [Reserved]

(c) Tolerances with regional registrations. [Reserved]

(d) Indirect or inadvertent residues. [Reserved]

[68 FR 55484, Sept. 26, 2003, as amended at 78 FR 66653, Nov. 6, 2013; 79 FR 19487, Apr. 9, 2014; 88 FR 57894, Aug. 24, 2023]
authority: 21 U.S.C. 321(q), 346a and 371
source: 36 FR 22540, Nov. 25, 1971, unless otherwise noted.
cite as: 40 CFR 180.500