Halogens are a group of elements in Group 17 of the periodic table. Among the halogens used in industry are fluorine, chlorine, bromine, and iodine. Tosoh Finechem is one of the few manufacturers with the expertise to handle all of these halogens.
Fluorine is found in nature primarily as fluorite (calcium fluoride: CaF₂), and most organofluorine compounds are produced from hydrogen fluoride (HF), which is obtained by reacting fluorite with sulfuric acid. Organofluorine compounds are known for their exceptional properties compared to other organic materials, such as high resistance to heat, chemicals, and UV radiation, as well as water and oil repellency, low dielectric constants, and low refractive indices.
Chlorine is the most widely used halogen and is typically produced from sodium chloride (common salt). We possess cross-coupling technology based on organochlorine compounds and apply it in the development of various functional materials.
Bromine occurs naturally in seawater. Leveraging the strength of our parent company Tosoh, Japan’s largest bromine producer, we manufacture and supply a wide range of organobromine compounds using hydrogen bromide (HBr) supplied by Tosoh.
Iodine is the rarest of the halogens and is mainly sourced from Chile and Chiba Prefecture in Japan. Organoiodine compounds are highly reactive and are used as raw materials in electronic materials and pharmaceuticals. They also play a critical role in the manufacturing processes of fluorinated polymers.
Among organohalogen compounds, organofluorine and organoiodine compounds are particularly high in added value and are used across a broad range of industries. We contribute to the enrichment of society by offering these products through our proprietary fluorination and iodination technologies.
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