OSAKA SODA CO., LTD. engages in the production and sale of chemicals, pharmaceuticals, and resin products. It operates through the following segments: Basic Chemicals, Functional Chemicals, Healthcare, and Trading and Others. The Basic Chemicals segment includes chlor-alkali, allyl chloride, and epichlorohydrin products. The Functional Chemicals segment produces and sells pharmaceuticals and intermediates including allyl ethers, epichlorohydrin rubber, diallyl phthalate (DAP) resins, silica gel for liquid chromatography and electrodes. The Healthcare segment manufactures and sells pharmaceutical refining materials, analytical equipment such as columns and devices, pharmaceutical active pharmaceutical ingredients and intermediates. The Trading and other segment sells, transports, and stores chemical products, sells daily necessities, building materials, and recycles resources. The company was founded on October 26, 1915 and is headquartered in Osaka, Japan.