StacksVerified U.S. regulatory reference

21 CFR §573.240

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The food additive calcium periodate may be safely used in accordance with the following prescribed conditions:
  1. (a)The additive is produced by reacting calcium iodate with calcium hydroxide or calcium oxide to form a substance consisting of not less than 60 percent by weight of penta calcium orthoperiodate containing 28 to 31 percent by weight of iodine.
  2. (b)It is used or intended for use in salt for livestock as a source of iodine.