StacksVerified U.S. regulatory reference

21 CFR §184.1563

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Ozone (O3, CAS Reg. No. 10028-15-6) is an unstable blue gas with a pungent, characteristic odor, which occurs freely in nature, It is produced commercially by passing electrical discharges or ionizing radiation through air or oxygen.
  2. (b)The ingredient must be of a purity suitable for its intended use in accordance with § 170.30(h)(1) of this chapter.
  3. (c)In accordance with § 184.1(b)(2), the ingredient is used to treat food only within the following specific limitations: