Edible salt is iodized salt with a small amount of potassium iodate. When heated, potassium iodate will decompose into potassium iodide and oxygen, and potassium iodate will sublimate into iodine under oxidation, resulting in iodine in so-called iodized salt in food not being used much by human body.
definition
Sodium chloride, the main component of salt, ionic compound. Pure sodium chloride crystal is a colorless and transparent cubic crystal. Due to the existence of impurities, sodium chloride is generally a white cubic crystal or fine-grained powder, with a specific gravity of 2. 165(25/4℃), a melting point of 80 1℃, a boiling point of 1442℃ and a density of 2. 165g/cm3, which has a taste. Soluble in water or glycerol, insoluble in ethanol and hydrochloric acid, neutral and conductive in aqueous solution.