Looking here at a salt packet from ncdonalds. What is sodium sulucoaluminate? Also, dextrose and potassium iodide are present. Why isn’t salt just salt?
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Sodium sulucoaluminate is an anti-caking agent. Plain salt granules can turn into a solid block if left in humid areas. The anti-caking helps stop that form happening.
Potassium iodide is added because iodine deficiency can be really bad, so iodine is added to salt to stop that from happening.
Dextrose is there to help keep the potassium iodide as potassium iodide. Otherwise it can decompose into iodine.
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