§180.209. Terbacil; tolerances for residues.
40 C.F.R. § 180.209
General. Tolerances are established for residues of the herbicide terbacil, including its metabolites and degradates, in or on the commodities in table 1 to this paragraph (a). Compliance with the tolerance levels specified in table 1 to this paragraph (a) is to be determined by measuring only the sum of terbacil (5-chloro-3-(1,1-dimethylethyl)-6-methyl-2,4(1H,3H)-pyrimidinedione) and its metabolites 3-tert-butyl-5-chloro-6-hydroxymethyluracil, 6-chloro-2,3-dihydro-7-hydroxymethyl 3,3-dimethyl-5H-oxazolo(3,2-a) pyrimidin-5-one, and 6-chloro-2,3-dihydro-3,3,7-trimethyl-5H-oxazolo(3,2-a) pyrimidin-5-one, calculated as the stoichiometric equivalent of terbacil, in or on the commodity.
Section 18 emergency exemptions. [Reserved]
Tolerances with regional registrations. [Reserved]
Indirect or inadvertent residues. [Reserved]
Notes, amendments, and revision history
Amendments
[71 FR 30818, May 31, 2006, as amended at 91 FR 8104, Feb. 20, 2026]
Authority
Authority: 21 U.S.C. 321(q), 346a and 371.
Source
Source: 36 FR 22540, Nov. 25, 1971, unless otherwise noted.
Amendments
[71 FR 30818, May 31, 2006, as amended at 91 FR 8104, Feb. 20, 2026]