Regulations last checked for updates: Mar 13, 2025

Title 21 - Food and Drugs last revised: Feb 25, 2025
§ 556.640 - Sulfadimethoxine.

(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.

authority: 21 U.S.C. 342,360b,371
source: 84 FR 32993, July 11, 2019, unless otherwise noted.
cite as: 21 CFR 556.640