§ 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:
Zinc content—19 to 22 percent.
C5H11NO2S “DL-methionine”—46 to 50 percent.
Cadmium—not more than 0.05 part per million.
（c） The additive is used in tablet form as a source of dietary zinc.
[46 FR 58297, Dec. 1, 1981]
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