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§ 184.1265 Cuprous iodide.
（a） Cuprous iodide （copper （I） iodide, CuI, CAS Reg. No. 7681–65–4） is a pure white crystalline powder. It is prepared by the reaction of copper sulfate with potassium iodide under slightly acidic conditions.
（b） The ingredient must be of a purity suitable for its intended use.
（c） In accordance with §184.1（b）（2）, the ingredient is used in food only within the following specific limitations:
| Category of food | Maximum treatment level in food | Functional use |
| Table salt | 0.01 percent | Source of dietary iodine. |
（d） Prior sanctions for this ingredient different from the uses established in this section do not exist or have been waived.
[49 FR 24119, June 12, 1984, as amended at 73 FR 8607, Feb. 14, 2008]
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