fda iodized salt labeling
Generally, iodized salt contains 0.002% to 0.004% iodine, supplied either as potassium iodide or potassium iodate. In the U.S., iodine is added as potassium iodide in table salt at slightly higher levels (0.006% to 0.01% potassium iodide, equivalent to 0.0046% to 0.0077% iodine. Potassium iodide is one of two sources of iodine permissible by the U.S. Food and Drug Administration.