21 CFR § 556.640
Sulfadimethoxine
June 25, 2020
(a) [Reserved]
(b) Tolerances. The tolerances for sulfadimethoxine are:
(1) Catfish and salmonids. Edible tissues: 0.1 ppm.
(2) Cattle.
(i) Edible tissues (excluding milk): 0.1 ppm.
(ii) Milk: 0.01 ppm.
(3) Chickens, turkeys, ducks, and chukar partridges. Edible tissues (excluding eggs): 0.1 ppm.
(c) Related conditions of use. See §§520.2220a, 520.2220d, 520.2220e, 522.2220, and 558.575 of this chapter.