
Tellurium Dioxide (TeO2, CAS 7446-07-3), 99.9–99.999%, supplied wholesale by Zyntex. High-purity oxide for acousto-optic paratellurite crystals, infrared tellurite glasses and tellurium chemicals. CoA and SDS.
Tellurium dioxide (TeO2) is a white crystalline powder that is practically insoluble in water and melts at about 733°C. Its crystalline form, paratellurite, has unusually strong acousto-optic properties.
In addition, crystal growers use high-purity TeO2 to grow paratellurite crystals for acousto-optic modulators, deflectors and tunable filters in lasers and imaging. Similarly, glass producers use it in tellurite glasses, which have a high refractive index and transmit infrared light, for optical fibers and amplifiers. It also serves as a starting material for tellurium chemicals and in some phase-change and thermoelectric research.
Furthermore, related tellurium materials in our range include Tellurium Metal, Zinc Telluride and Bismuth telluride.
Typical uses include, for example:
🔦 Acousto-Optics
Raw material for paratellurite crystals.
💡 Tellurite Glasses
Infrared glasses as well as fibers.
🧪 Tellurium Chemicals
Starting material for compounds.
🔬 Research
Phase-change as well as thermoelectric studies.
| Parameter | Standard Value |
|---|---|
| Product Name | Tellurium Dioxide |
| CAS Number | 7446-07-3 |
| Molecular Formula / Weight | TeO2 / 159.60 g/mol |
| Assay (Purity) | 99.9% – 99.999% |
| Appearance | White Crystalline Powder |
| Documents | CoA as well as SDS with every lot |
⚠️ Safety & Handling: May damage fertility or the unborn child and is harmful if swallowed. Avoid dust formation and also wear respiratory protection, gloves and eye protection. Store locked in tightly closed containers in a dry place. Always consult the Safety Data Sheet (SDS), because it contains the full classification and handling instructions.
What is paratellurite?
It is the crystalline form of tellurium dioxide used in acousto-optic devices because of its strong acousto-optic effect.
Which purity do crystal growers need?
Usually 99.99% to 99.999%, whereas glass applications often use 99.9%.
How can I get a price and documents?
Prices depend on quantity, packaging and destination, so please contact us with your required volume. We then send a quotation together with the CoA and SDS.