---
kind: "section"
citation: "21 C.F.R. § 172.399"
title: "21"
number: "172.399"
heading: "Zinc methionine sulfate."
url: "https://uscodex.org/cfr/21/172.399"
---

# §172.399. Zinc methionine sulfate.


Zinc methionine sulfate, CAS Reg. No. 56329-42-1, may be safely used in accordance with the following prescribed conditions:

- (a) The additive is the product of the reaction between equimolar amounts of zinc sulfate and DL-methionine in purified water.
- (b) **The additive meets the following specifications—**
- (c) **The additive is used in tablet form as a source of dietary zinc.**

## Notes

### Amendments

[46 FR 58297, Dec. 1, 1981]

### Authority

Authority: 21 U.S.C. 321, 341, 342, 348, 371, 379e.

### Source

Source: 42 FR 14491, Mar. 15, 1977, unless otherwise noted.

### Amendments

[46 FR 58297, Dec. 1, 1981]