High Purity Tellurium 99.99% 4n 5n 6n 7n Tellurium Ingot

1. material overview
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 mgm3 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 gmcc
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 calgok @ 25�
heat of vaporization: 11.9 k-calgm atom at 989.8 �
heat of fusion: 3.23 calgm mole
3. Specification
impurities in ppm
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