Высокочистый порошок оксида теллурия TeO2 CAS № 7446 7 3

About Tellurium Oxide TeO2 powder:
Tellurium dioxide is an inorganic compound, and its chemical formula is TeO2.White powder.White crystals. Tetragonal crystal structure, heating yellow, melting is dark yellow-red, slightly soluble in water, soluble in strong acid and alkali, and form double salt. Tellurium dioxide (TeO2) is a solid oxide of tellurium. It comes in two different forms: the yellow trapezoid mineral β-TeO2 tellurite and the synthetic colorless tetragonal (dicurellurite)α-TeO2.TeO2 may be a teratogen, and contact with tellurium compounds produces ethyl telluride, which produces a garlic-like odor on the breath. Feel free to send an inquiry to get the latest price if you would like to buy Tellurium Oxide TeO2 powder in bulk.

Performance of Tellurium Oxide TeO2 powder:
As a kind of amphoteric compound, tellurium dioxide is basically insolvable in water or ammonia, yet solvable in strong acid and alkali. This white solid tellurium dioxide powder will become yellowish after heating and turn dark yellowish red after fusing. its unique characteristics tellurium dioxide is an integral part of acousto-optic products as well as having good diffraction efficiency and it works very well at most power levels.

Technical Parameter of Tellurium Oxide TeO2 powder:

How is Tellurium Oxide TeO2 powder produced?
With nitric acid or containing a mixture of nitric acid oxidation of elemental tellurium, get the original tellurium acid, then the original tellurium acid with a strong hydrochloric acid into tellurium tetrachloride, filter out the unreacted impurities reoccupy after alkali neutralization, precipitation out of tellurium dioxide, after filtering, washing, drying, will get rid of the low melting point impurity tellurium dioxide calcination, tellurium dioxide powder. The process flow of this method is long, and a large amount of NO and NO2 gas will be produced in the reaction process.
Paratellurite, α-TeO2, is produced by reacting tellurium with O2:
Te + O2 → TeO2
Alternative preparation is to dehydrate tellurous acid, H2TeO3, or to thermally decompose basic tellurium nitrate, Te2O4·HNO3, above 400 °C.
 
Applications of Tellurium Oxide TeO2 powder:
Tellurium dioxide can be used in different fields depending on its purity and form.
Glass shapers for tellurite glass frit, single-crystal tellurium dioxide for optical devices, front silver paste for solar cells, rubber vulcanization accelerator, electroplating chemical additive.
Tellurium dioxide is sometimes used to color ceramics.
Tellurium dioxide has been increasingly used in optical refraction applications such as fiber optics and free products.
Tellurium dioxide can even be used in high-speed or high-resolution equipment that needs to handle high laser power.
Tellurium dioxide is used in the preparation of single-crystal tellurium dioxide, infrared devices, acousto-optic devices, infrared window materials, electronic components and preservatives, etc. Packing in polythene bottles.
In addition, tellurium dioxide has the following functions:
Used as acoustooptic deflection element.
Used for disinfection, identification of bacteria in vaccines, etc.
The preparation of two - six compound semiconductor, thermoelectric conversion element, refrigeration element, piezoelectric crystal and an infrared detector.
It is used as an acousto-optic material.
Tellurium dioxide is also a reluctant glass-forming agent, which will form glass under appropriate cooling conditions, or with small moles % of second compounds, such as oxides or halides.TeO2 glass has a high refractive index and can be transmitted to the mid-infrared part of the electromagnetic spectrum, so it has an important technical value in optical waveguides. Tellurite glasses also show up to 30 times the Raman gain of silicon, which is useful in optical fiber amplification.
 

Storage Condition of Tellurium Oxide TeO2 powder:
Tellurium Oxide TeO2 powder should be stored in dry, cool and sealing of the environment, can not be exposure to air, in addition, should avoid the heavy pressure, according to ordinary goods transportation.