CFR›Title 9›Chapter III›Part 531 ContainsSection 531.1CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 531—DEFINITIONS Sections 531.1 § 531.1 Definitions. Authority7 U.S.C. 138f; 7 U.S.C. 450; 21 U.S.C. 601-602, 606-622, 624-695; 7 CFR 2.7, 2.18, 2.53. Previous 530 Part 530—General Requirements; Definitions Next 532 Part 532—Requirements for Inspection