tellurium powder tellurium nano particle 99.99% 4N for sale

1. Product description
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.
2. GENERAL PROPERTIES
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
3. Specification
Impurities in ppm
Te %
99.99 min
AI(ppm)
5max
Cu(ppm)
10max
Fe(ppm)
5max
Pb(ppm)
15max
Bi(ppm)
5max
Na(ppm)
20max
Si(ppm)
5max
S(ppm)
10max
Se(ppm)
15max
As(ppm)
5max
Mg(ppm)
5max
Total content of AI, Cu, Fe, Pb, Bi,Na, Si, S,Se, As, Mg (ppm)
100max