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Tellurium(IV) Oxide (TeO₂)

Tellurium(IV) Oxide (TeO₂2), or Tellurium Dioxide, is a crystalline white solid that has two forms. It is amphoteric and insoluble. The compound shows yellow when heating and dark yellow red when melting, and has a longitudinal speed of sound of 4,260 meters per second (14,000 ft/s) at around room temperature.

Purity 99.0% up to 99.99%
Typical Applications

Tellurium(IV) Oxide is used in devices (modulators, deflectors, switches, and spectrum analyzers that can convert light into sound (acousto-optic). It is also used to make glasses with high refractive indices and other special properties. It is useful in optical waveguides and optical fiber amplification, and in the media layer of rewritable optical discs, including DVDs and CDs.

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Tellurium(IV) Oxide TSCA (SARA Title III) Status: Listed.
Harmful if swallowed or inhaled, and through skin contact.
For further information, please call the EPA Office of Chemical Safety and Pollution Prevention (OCSPP) at 202-564-2902.
Tellurium(IV) Oxide CAS Number: 7446-07-3
Tellurium(IV) Oxide UN Number: 3284

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