21 C.F.R. § 170.15
Adoption of regulation on initiative of Commissioner
(a) The Commissioner upon his own initiative may propose the issuance of a regulation prescribing, with respect to any particular use of a food additive, the conditions under which such additive may be safely used. Notice of such proposal shall be published in the
(b) Action upon a proposal made by the Commissioner shall proceed as provided in part 10 of this chapter.