StacksVerified U.S. regulatory reference

21 CFR §556.445

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Acceptable daily intake (ADI). The ADI for total residues of nicarbazin (4,4′-dinitrocarbanilide and 2-hydroxy-4,6-dimethylpyrimidine) is 200 µg/kg of body weight per day.
  2. (b)Tolerances. The tolerance for 4,4′-dinitrocarbanilide (marker residue) is:
    1. (1)Chickens. Liver (target tissue): 52 ppm.
    2. (2)[Reserved]
  3. (c)Related conditions of use. See §§ 558.364 and 558.366 of this chapter.