{"data":{"id":"us/21-cfr-172.399","jurisdiction":"us","citation":"21 CFR 172.399","heading":"Zinc methionine sulfate.","body":"Zinc methionine sulfate, CAS Reg. No. 56329-42-1, may be safely used in accordance with the following prescribed conditions:\n(a) The additive is the product of the reaction between equimolar amounts of zinc sulfate and DL-methionine in purified water.\n(b) The additive meets the following specifications:\nZinc content—19 to 22 percent.\nC5H11NO2S “DL-methionine”—46 to 50 percent.\nCadmium—not more than 0.05 part per million.\n(c) The additive is used in tablet form as a source of dietary zinc.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER B—FOOD FOR HUMAN CONSUMPTION","PART 172—FOOD ADDITIVES PERMITTED FOR DIRECT ADDITION TO FOOD FOR HUMAN CONSUMPTION","Subpart D—Special Dietary and Nutritional Additives"],"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":"cc551cba72f8d0620017c0710f46b3b52478ded36ac52c82d2ba2910463846cc","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-172.395","next":"us/21-cfr-172.410"},"notice":"GroundRules: Original legal text. Not legal advice."}