---
kind: "section"
citation: "21 C.F.R. § 556.163"
title: "21"
number: "556.163"
heading: "Clorsulon."
url: "https://uscodex.org/cfr/21/556.163"
---

# §556.163. Clorsulon.

- (a) **Acceptable daily intake (ADI).** The ADI for total residue of clorsulon is 8 µg/kg of body weight per day.
- (b) **Tolerances.** The tolerances for clorsulon (marker residue) are:
  - (1) **Cattle.**
    - (i) **Kidney (target tissue)—** 1.0 ppm.
    - (ii) **Muscle—** 0.1 ppm.
  - (2) [Reserved]
- (c) **Related conditions of use.** See §§ [520.462](/cfr/21/520.462.md) and [522.1193](/cfr/21/522.1193.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.