Material name

Purity

 size

High purity Tellurium

5N-7N

Tellurium Ingot

4N-5N

Tellurium Granules

4N-5N

Tellurium Powder

4N-5N

 100 Mesh -400 Mesh

Tellurium Shot/Pellet

4N-5N

0.5-2.5 mm

Tellurium Dioxide

4N-5N

100 mesh

Characteristics:

Silvery white, lustrous, solid metal. Soluble in sulfuric acid, nitric acid, potassium hydroxide and potassium cyanide solution. Insoluble in water. Imparts garlic-like odor to breath, can be depilatory. It is a p-type semiconductor and its conductivity is sensitive to light exposure.

Hazards:

(Metal and compounds, as Te): Toxic by inhalation. Tolerance: 0.1 mg/m3 of air.

Applications:

Tellurium could be used in different fields, according to its purity. It could be used as infrared detector materials, solar cell material, cooling material and so on. Mainly applied for compound semi-conductor, solar energy cell, electrothermic transition element, cooling element,air-sensitive,thermosensitive,pressure-sensitive,photosensitive,piezo-electric crystal and nuclear radiation detect, infrared detector and basic material.

Symbol:

Te

CAS:                           

13494-80-9

Atomic Number:

52

Atomic Weight:

127.60

Density:

6.24 gm/cc

Melting Point:

449.5 ℃

Boiling Point:

989.8 ℃

Thermal Conductivity:

 -

Electrical Resistivity:

4.36x10(5) microhm-cm @ 25 ℃

Electronegativity:

2.1 Paulings

Specific Heat:

0.0481 Cal/g/oK @ 25℃

Heat of Vaporization:

11.9 K-Cal/gm atom at 989.8 ℃

Heat of Fusion:

3.23 Cal/gm mole

Te %

99.999 min

Cu

0.5 max

Ag

0.2 max

Mg

0.2 max

Sb

/

Ni

0.5 max

Zn

0.5 max

Bi

0.5 max

Mn

0.2 max

Ca

1.0 max

Fe

1.2 max

Cd

0.5 max

Cr

0.1 max

As

/

Si

1.0 max

Al

0.5 max

Se

2.0 max

Pb

0.5 max

Sn

0.2 max

Na

0.5 max