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Quick Details

  • Classification: Tellurium Dioxide
  • CAS No.: 7446-07-3
  • Other Names: Tellurium oxide
  • MF: TeO2
  • EINECS No.: 231-193-1
  • Place of Origin: Hunan, China (Mainland)
  • Grade Standard: Electron Grade, Industrial Grade, Reagent Grade
  • Purity: 99.99%, 99.999%, 99.9% 99.99% 99.999%
  • Appearance: White powder, Pure white nano powder
  • Application: Conductive silver paste, anti-corrosive agent,AO devices
  • Brand Name: SANTECH
  • Model Number: TeO2-4N
  • Product name: Tellurium dioxide
  • Other name: Tellurium nano oxide powder
  • Molecular Formula: TeO2
  • Package: 1kg or 2kg per bottle inside a vacuum foil bag
  • Property: It has low heavy content and free of icad ion with great solubility
  • Particle size: D50<5um, or as required
  • Usage: Used in front-side sliver paste, electroplating, single crystal
  • MOQ: 100g

Packaging & Delivery

Packaging Details 1KG/Bottle, Sealed in plastic vacuum bag or poly vacuum bottle, or as required
Delivery Time Shipped in 1 days after payment

Front-side Silver Paste raw materials Tellurium Dioxide, Refined Tellurium Price, 99.99% 99.999% Tellurium Oxide


Specially used in chemical electroplating & frontside silver paste


1. Santech Materials specializes in producing high purity α-TeO2 powder (purity 99.9% to 99.999%) without acid 

    radical ion, particle size (d50) can be < 5 micron.


2. Tellurium Dioxide is a solid oxide of tellurium, it has two crystal structures tetragonal (α-TeO2) andmonoclinic (β-

    TeO2), the application and research of TeO2 is based on tetragonal TeO2 (α-TeO2).


3. It is insoluble in water and soluble in concentrated sulfuric acid. TeO2 is an amphoteric substance and therefore

    can act both as an acid or as a base depending on the solution it is in, it reacts with acids to make tellurium salts

    and bases to make tellurites. It can be oxidized to telluric acid or tellurates. 

Product Description

Physical Properties 


Purity99.9%, 99.99%, 99.999%
Particle size< 5 micron



Molar mass159.60 g/mol
Density5.670 g/cm3 (tetragonal) 6.04 g/cm3 (orthorhombic)
Melting point732℃

Boiling point

Transparency range0.33-5.0
Thermal conductivity, mW/cm K30
Mechanical Impedance, kg/m sec3.6 x 106
Acoustic Velocities, km/sec
for shear wave along <110>
for longitudinal wave along <001>
Acoustic attenuation at 500 MHz, dB/cm2.3
AO Figure of Merit M2, sec3/g
Slow shear mode along <110>
Longitudinal mode along <001>


1200 x 10-18

34.5 x 10-18

Packing1 kilo per vacuum bottle


Product Show



Test: GDMS Method


SEM Image & Analysis Report





1) Tellurium Dioxide is used in front-side pastes, acousto-optical devices, infrared sensor, tellurite glass, avionics

    fiber optic system architectures, electroplating industry, and as anti-corrosive agent material in electronic



2) Sometimes used to color ceramics, Tellurium dioxide has increasingly been used in optical refraction with the end

    use of glass fibers (fiber optics). These types of glass have high refractive indices and transmit into the mid-

    infared part of the electromagnetic spectrum. Tellurite glasses have also been shown to exhibit Raman gain up to

    30 times that of silica, useful in optical fibre amplification.


Terminal Application Related



Packaging & Shipping

Step 1 Bottle Packing

Step 2 Poly Vacuum Packing

Step 3 Bubble Wrap

Step 4 Sealed packing

Company Information

We specialize in producing rare metals and specialty materials for many years, the main products including: metal products (Bi,Te,In,Ga,Ge,Se,Ir), telluride compounds, sulfide,nitrate and chloride products. With updated precision production equipments and skilled staff, we supplied high quality metals and chemicals to customer like you over 20 countries and regions.


R&D Center 



QC Quality Management  

Our Services

Quality Guarantee: If any quality problems, free replacement will be adopted.

Technical Support: 24 hours technical support by e-mail or calling

FAQ Email Help: 2 hours in workday, 12 hours in the weekend

Prompt Delivery: In 2-5 days


How to Contact Us



If you have any other question please contact us for prompt response.


Changsha Santech Materials Co.,Ltd.


No. 909-910,9/f Xiaoxiang International Bldg,
158 Wuyi Avenue,Changsha
Tel: 86 (0)731 8972 3191
Fax: 86 (0)731 8972 3336
Mob: 86 155 7319 6247

Skype: Leo.lubin

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