---
kind: "section"
citation: "21 C.F.R. § 556.445"
title: "21"
number: "556.445"
heading: "Nicarbazin."
url: "https://uscodex.org/cfr/21/556.445"
---

# §556.445. Nicarbazin.

- (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.
- (b) **Tolerances.** The tolerance for 4,4′-dinitrocarbanilide (marker residue) is:
  - (1) **Chickens.** Liver (target tissue): 52 ppm.
  - (2) [Reserved]
- (c) **Related conditions of use.** See §§ [558.364](/cfr/21/558.364.md) and [558.366](/cfr/21/558.366.md) of this chapter.

## Notes

### Authority

Authority: 21 U.S.C. 342, 360b, 371.

### Source

Source: 84 FR 32993, July 11, 2019, unless otherwise noted.