Physical Characters

Colorless cubic crystals or white particles.Salty and slightly bitter taste.Melting point 651℃, boiling point 1304℃, relative density 3.665 (4℃), 3.607 (25℃), refraction rate 1.7745. Easy soluble in water, can be soluble in glycerol.Strong hygroscopicity.Gradually absorb moisture in the air to the water content is up to 5%, can be oxidized by the air to release iodine and become brown, the aqueous solution is slightly alkaline, also have the same change, can be slightly added alkali to keep stable.

Pharmaceutical use as thyroid tumor prevention and treatment agent, expectorant and diuretic, photosensitive agent.