---
kind: "section"
citation: "21 C.F.R. § 573.240"
title: "21"
number: "573.240"
heading: "Calcium periodate."
url: "https://uscodex.org/cfr/21/573.240"
---

# §573.240. Calcium periodate.


The food additive calcium periodate may be safely used in accordance with the following prescribed conditions:

- (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.
- (b) **It is used or intended for use in salt for livestock as a source of iodine.**

## Notes

### Authority

Authority: 21 U.S.C. 321, 342, 348.

### Source

Source: 41 FR 38652, Sept. 10, 1976, unless otherwise noted.