{"data":{"id":"us/21-cfr-173.55","jurisdiction":"us","citation":"21 CFR 173.55","heading":"Polyvinylpyrrolidone.","body":"The food additive polyvinylpyrroli-done may be safely used in accordance with the following prescribed conditions:\n(a) The additive is a polymer of purified vinylpyrrolidone catalytically produced, having an average molecular weight of 40,000 and a maximum unsaturation of 1 percent, calculated as the monomer, except that the polyvinylpyrrolidone used in beer is that having an average molecular weight of 360,000 and a maximum unsaturation of 1 percent, calculated as the monomer.\n(b) The additive is used or intended for use in foods as follows:\nFood Limitations\nBeer As a clarifying agent, at a residual level not to exceed 10 parts per million.\nFlavor concentrates in tablet form As a tableting adjuvent in an amount not to exceed good manufacturing practice.\nNonnutritive sweeteners in concentrated liquid form As a stabilizer, bodying agent, and dispersant, in an amount not to exceed good manufacturing practice.\nNonnutritive sweeteners in tablet form As a tableting adjuvant in an amount not to exceed good manufacturing practice.\nVitamin and mineral concentrates in liquid form As a stabilizer, bodying agent, and dispersant, in an amount not to exceed good manufacturing practice.\nVitamin and mineral concentrates in tablet form As a tableting adjuvant in an amount not to exceed good manufacturing practice.\nVinegar As a clarifying agent, at a residual level not to exceed 40 parts per million.\nWine As a clarifying agent, at a residual level not to exceed 60 parts per million.","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 173—SECONDARY DIRECT FOOD ADDITIVES PERMITTED IN FOOD FOR HUMAN CONSUMPTION","Subpart A—Polymer Substances and Polymer Adjuvants for Food Treatment"],"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":"2f59242f5daa4cdf13cf77ebbffd8feda7bdd3f9c191c20697582d9febe1b438","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-173.50","next":"us/21-cfr-173.60"},"notice":"GroundRules: Original legal text. Not legal advice."}