Iodine is a blackish-purple, metallic luster scaly or granular solid with a pungent and irritating odor.It sublimes readily at room temperature and its vapor is purple.As a halogen element, it has active chemical properties, strong oxidizing properties and corrosiveness.

1. Pharmaceutical Sector:Disinfectant (tincture of iodine), bactericide, iodine preparations, antidote for radioactive iodine.

2. Industrial Sector:Manufacture of iodides, dyestuffs, photographic materials, high-purity electronic reagents, smoke fire extinguishing agents, cutting oil bacteriostats.

3. Agricultural Sector:Feed additives, raw materials for pesticides, plant growth regulators.

4. Analytical Sector:Titration analysis, iodine value determination, standardization of sodium thiosulfate, starch color reaction.