CFR›Title 21›Chapter I›Part 166 ContainsSubparts A–BCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 166—MARGARINE Subparts A Subpart A—General Provisions Section 166.40 B Subpart B—Requirements for Specific Standardized Margarine Section 166.110 Authority21 U.S.C. 321, 341, 343, 347, 348, 371, 379e. Previous 165 Part 165—Beverages Next 168 Part 168—Sweeteners and Table Sirups