CFR › Title 40 › Part 180 › §180.27240 CFR §180.272Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)General. Tolerances are established for residues of the defoliant tribuphos (S,S,S-tributyl phosphorotrithioate) in or on food commodities as follows:(b)Section 18 emergency exemptions. [Reserved](c)Tolerances with regional registrations. [Reserved](d)Indirect or inadvertent residues. [Reserved]