CFR › Title 21 › Part 571Part 571 — Food Additive PetitionsSubpart A — General Provisions§ 571.1— Petitions.§ 571.6— Amendment of petition.§ 571.7— Withdrawal of petition without prejudice.Subpart B — Administrative Actions on Applications§ 571.100— Regulation based on petition.§ 571.102— Effective date of regulation.§ 571.110— Procedure for objections and hearings.§ 571.115— Application of the cancer clause of section 409 of the act.§ 571.130— Procedure for amending and repealing tolerances or exemptions from tolerances.