Arch Chemicals, Inc., a biocides company, provides chemistry-based and related solutions to destroy and control the growth of harmful microbes in the United States and internationally. Its Treatment Products segment manufactures and sells chlorine-based and non-chlorine-based products and equipment for the sanitization and treatment of residential and commercial pool and spa water, drinking water, and water used in industrial applications. It also offers personal care and industrial biocides that control dandruff on the scalp and the growth of micro-organisms, such as fungi and algae; and biocides for anti-bacterial applications. In addition, this segment produces wood treatment chemical solutions that protect wood against rot, fungal decay, or termites and other insects; and provides industrial or consumer-applied products for the surface decoration and protection of wood, including stains, polyester-based, and polyurethane-based coatings, and water-based coatings.The companys Performance Products segment manufactures and sells urethane intermediate products, such as specialty polyols, which are used as ingredients for elastomers, adhesives, coatings, sealants, and rigid foam; glycols and glycol ethers for use as ingredients in cleaners, personal care products, and antifreeze; and flexible polyols. This segment also supplies hydrazine hydrates and hydrazine derivatives used as chemical blowing agents, water treatment chemicals, agricultural products, and pharmaceutical intermediates, as well as for use as fuel in satellites, expendable launch vehicles, and auxiliary and emergency power units. Arch Chemicals, Inc. serves pool and spa retailers, consumer product companies, big box retailers, furniture manufacturers, chemical and equipment distributors, wood treaters, sawmills, other chemical manufacturers, and the United States government. The company was founded in 1998 and is headquartered in Norwalk, Connecticut.