{"data":{"id":"us/21-cfr-556.163","jurisdiction":"us","citation":"21 CFR 556.163","heading":"Clorsulon.","body":"(a) Acceptable daily intake (ADI). The ADI for total residue of clorsulon is 8 µg/kg of body weight per day.\n(b) Tolerances. The tolerances for clorsulon (marker residue) are:\n(1) Cattle. (i) Kidney (target tissue): 1.0 ppm.\n(ii) Muscle: 0.1 ppm.\n(2) [Reserved]\n(c) Related conditions of use. See §§ 520.462 and 522.1193 of this chapter.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER E—ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS","PART 556—TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD","Subpart B—Specific Tolerances for Residues of Approved and Conditionally Approved New Animal Drugs"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"fcd556b697b368ded1839d95e4f3ee1d63af1714408cc9207331b1ad713353d7","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-556.160","next":"us/21-cfr-556.165"},"notice":"GroundRules: Original legal text. Not legal advice."}