Iodine Iodine is a synthetic compound with the chemical formula of (CH3COO)2I. It is an important synthetic material in semiconductor technology and it has excellent electrical conductivity, thermal conductivity, and mechanical properties. The iodine compounds are used for the manufacture of superconducting materials, semiconductors, optoelectronic devices, medical devices, and other applications. They have been widely adopted by many countries including China, Russia, Japan, the United States, South Korea, Australia, India, and several ASEAN countries. In chemical engineering, iodine is a type of impurity or impurity element in the synthesis process of other elements such as halogen. For example, Iodine is an important component in the production of semiconductor materials and it is used for the manufacture of superconducting materials.