Iodine, including Technical Data, Safety Data and its high purity properties, research, applications and other useful facts are discussed below. Scientific facts such as the atomic structure,ionization energy, abundance on Earth, conductivity and thermal properties are included.

Iodine compounds with many elements, but is less active than the other halogens, which displace it from iodides. Iodine exhibits some metallic-like properties. It dissolves readily in chloroform, carbon tetrachloride, or carbon disulfide to form purple solutions. It is only slightly soluble in water. Iodine compounds are important in organic chemistry and very useful in medicine. Iodides, and thyroxine which contains iodine, are used internally in medicine. Potassium iodide finds use in photography. Iodine is found mainly as the highly water-soluble iodide I-.The deep blue colorwith starch solution is characteristic of the free element. Iodine is available in compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity).

Abundance. The following table shows the abundance of iodine and each of its naturally occurringisotopes on Earth along with the atomic mass for each isotope.

Conductivity. As to iodine‘s electrical and thermal conductivity, the electrical conductivity measured in terms of electrical resistivity @ 20 ?C is1.3×107Ω·m and its electronegativities (or its ability to draw electrons relative to other elements) is 2.66. The thermal conductivity of radium is 0.45W m-1 K-1. 


Thermal Properties. The melting point and boiling point for iodine are stated below. The following chart sets forth the heat of fusion, heat of vaporization and heat of atomization.