Tokuyama Corporation (株式会社トクヤマ) is a Japanese chemical company founded in 1918 and headquartered in Tokyo. Listed on the Tokyo Stock Exchange (4043), it employs approximately 5,800 people and operates in chemicals, cement, advanced electronic materials, life science, and environmental sectors.
Its chemicals segment produces soda ash (Japan's sole domestic manufacturer), caustic soda, calcium chloride, vinyl chloride, propylene oxide, and methylene chloride for applications in glass, detergents, and food additives. The company is the world's fourth-largest producer of high-purity polycrystalline silicon for semiconductors, alongside IC chemicals like high-purity IPA and TMAH, silica, and aluminum nitride thermal management materials.
Additional operations include cement production and recycling, fine chemicals, microporous films, dental materials, and eco-friendly products such as ion exchange membranes for hydrogen applications. Tokuyama maintains manufacturing sites in Shunan (Yamaguchi) and Kamisu (Ibaraki), focusing on high-quality industrial chemicals and advanced materials.
Also known as トクヤマ and Tokuyama.
chemXplore tracks 1 project involving Tokuyama Corp, of which one is active.
Tokuyama Corp's role on them: Investor / Financier.
1 new construction.
Contractors are recorded on this project For subscribers
Targeting: Tetramethylammonium hydroxide (1)
New tetramethylammonium hydroxide plant will double capacity for photoresist developer supply; completion scheduled FY2027; groundbreaking June 19 in Pyeongtaek.
KRW 130 billion investment for a new TMAH plant on a 32,216 m² Poseung site to create a second production base and improve supply stability and logistics for semiconductor developers.
Targets >60% specialty by 2030; building a 500k t/yr compounding plant; creating hydrogen value chain—four fuel-cell plants (80MW) and 450‑bar H2 hub; expanding high-end copper foil and TMAH output.
