Iodized salt is a

Iodized salt is a mixture of common salt (sodium chloride) and small proportions of iodine-containing agents, most commonly potassium iodide (KI) or potassium iodate (KIO3) [t1][t4]. It is classified as a mixture rather than a compound because the components are physically blended together and retain their individual chemical identities; they are not chemically bonded in a fixed stoichiometric ratio to form a new substance [t3]. While potassium iodate is often preferred by manufacturers due to its higher stability and resistance to oxidation, potassium iodide is also widely used as a source of stable iodine to prevent iodine deficiency [t2][t5]. Molecular iodine (I2) is generally not used directly for iodization in standard table salt because it is less stable and more prone to sublimation compared to ionic salts like potassium iodide [t5].

Sources

1. [1] https://pmc.ncbi.nlm.nih.gov/articles/PMC12345736/
2. [2] https://www.sciencedirect.com/topics/pharmacology-toxicology-and-pharmaceutical-science/iodine