Physical and chemical properties: Purple-black scales or platelets with metallic luster.
It is brittle and the steam is purple. Has a special irritating smell.
Solubility is slightly soluble in water, and the solubility increases with increasing temperature; hardly soluble in sulfuric acid; easily soluble in organic solvents; iodine is also easily soluble in chloride and bromide; more soluble in iodide solution;
soluble in sulfur, Ammonium and alkali metal iodides, aluminum, tin, titanium and other metal iodides.