CFR›Title 21›Chapter I›Part 171 ContainsSubparts A–BCorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 PART 171—FOOD ADDITIVE PETITIONS Subparts A Subpart A—General Provisions Sections 171.1–171.8 B Subpart B—Administrative Actions on Applications Sections 171.100–171.130 Authority21 U.S.C. 321, 342, 348, 371.Source42 FR 14489, Mar. 15, 1977, unless otherwise noted. Previous 170 Part 170—Food Additives Next 172 Part 172—Food Additives Permitted for Direct Addition to Food for Human Consumption