ABSTRACT
Acetic acid is an important industrial material with an annual production of 6.5 megatons. Catalyzed acetic acid synthesis requires hydroiodic acid. Iodide is the starting point for water and oil repellent fluoropolymers. Iodine does not remain in the fluoropolymers and is recycled. Iodine compounds are most commonly used in the form of potassium iodides and sodium iodides. In addition, iodine is used as a stabilizer for paper bulking agents, ink resins, tall oil fatty acids, and tall oil rosin. Copper iodides stabilize polyamides. Copper iodides are superior in high-temperature environments compared with other organic stabilizers. Iodonium compounds generate acid through photolysis. Iodide trifluoromethane is a fire extinguishing agent with low global warming potential. Photo-curing resins can be hardened with iodonium salt. Functional transformation is possible with an iodine-based polymerization initiator. Iodinated aromatic compounds which bind iodine atoms in the nuclei of aromatic compounds are in great demand as intermediates in many fields such as pharmaceutical products, agrochemicals, and electronic materials.
