Sodium iodide is a common inorganic iodide salt with extensive application value. It is widely used as analytical reagent for qualitative and quantitative detection of halogen elements and heavy metal ions. In medical field, it serves as raw material for iodine supplement medicines and contrast agent auxiliary material. It acts as catalyst and additive in organic synthesis reactions to promote substitution and cyclization process. It is also applied in photographic industry, feed iodine fortifier and cosmetic raw materials. Besides, it can be used for preparing other iodine compounds. Its good solubility and chemical activity make it essential in chemical analysis, pharmacy and fine chemical production.

This chemical carries mild irritation and low toxicity. Inhalation of powder may irritate respiratory tract and cause throat discomfort, keep ventilation and wear dust mask during operation. Skin contact may cause dryness and slight itching, rinse skin with clean water after exposure. Eye contact leads to stinging and foreign body sensation, flush eyes with running water for more than fifteen minutes. Long term exposure to air and light causes deterioration. Keep away from strong oxidants and acid substances. Avoid mixing with edible articles. Waste residues shall be disposed as general inorganic chemical waste to avoid unnecessary health risk and environmental pollution.