Home › CFR › Title 21 › Part 18021 CFR Part 180 — Food Additives Permitted in Food or in Contact with Food on an Interim Basis Pending Additional StudySubpart A — General Provisions§ 180.1— General.Subpart B — Specific Requirements for Certain Food Additives§ 180.22— Acrylonitrile copolymers.§ 180.25— Mannitol.§ 180.37— Saccharin, ammonium saccharin, calcium saccharin, and sodium saccharin.