Producer
Tokuyama Corporation
Japanese specialty chemicals producer, the world's largest manufacturer of semiconductor-grade polysilicon and associated chlorosilane intermediates including high-purity silicon tetrachloride (SiCl4). Operates Tokuyama Malaysia (polysilicon) and the Tokuyama Factory (Yamaguchi, Japan) — the only semiconductor-grade SiCl4 plant outside of the United States and Europe with qualified supply for leading optical-fiber and semiconductor customers.
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Inputs supplied
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Goods downstream
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Facilities
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1 input Tokuyama Corporation supplies
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Polysilicon (Semiconductor & Solar)
30%Chlor-Alkali
25%Dental & Specialty Materials
20%Specialty Chemicals
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Did you know2024
Tokuyama Corporation (listed on Tokyo Stock Exchange) produces both electronic-grade IPA (IPA SE, 99.99%+ purity via proprietary direct hydration process, adopted by 3 of the top 10 global chipmakers) AND polysilicon for solar panels and semiconductors. The same Japanese specialty chemical company is simultaneously a critical input supplier for advanced chip fabrication and solar energy manufacturing — two supply chains that are treated as completely separate in policy discussions but converge at one company in Tokuyama, Yamaguchi Prefecture. A fire or disaster at the Tokuyama facility would simultaneously threaten semiconductor wafer cleaning and photovoltaic module production.
PV Magazine ↗Origin2023
Tokuyama Corporation was founded in 1918 in Tokuyama, Yamaguchi Prefecture -- a coastal location selected for access to ocean water (for chlor-alkali brine electrolysis) and marine shipping. The company started with soda ash production using the Solvay process and expanded through the 20th century into chlorine chemistry and specialty chemicals. The semiconductor polysilicon business developed in the 1970s when Japan's emerging semiconductor industry needed ultra-pure silicon that went beyond what standard metallurgical silicon could provide. Tokuyama developed purification processes reaching 12N+ purity (99.9999999999%) through proprietary chlorosilane reduction chemistry. Today Tokuyama is one of only three or four companies globally capable of producing semiconductor-grade polysilicon to specification -- alongside Hemlock Semiconductor (US), Wacker Chemie (Germany), and OCI (Korea). A 1918 Yamaguchi Prefecture soda ash company is now one of the critical gatekeepers for the silicon supply chain of the world's semiconductor industry.
Tokuyama Corporation ↗