Germanium disulfide or Germanium(IV) sulfide CAS NO: 12025-34-2 is the inorganic compound with the formula GeS2. It is a white high-melting crystalline solid which was the first germanium compound found by Clemens Winkler, during the analysis of argyrodite. The fact that germanium sulfide does not dissolve in aqueous acid made it possible for Winkler to isolate the new element. It is used in transistors and diodes, and infrared transmitting glass applications. Recently GeS2 has found application in fiber and photo optics. Germanium sulfide based glass films have been deposited by spin-coating onto single crystal silicon wafers and silica glass disks. Learn more about City Chemical LLC.
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