... 1)Tellurium metalAppearance:silvery lustrous grayMelting point:449.51°CSpecifications:a.High purity Tellurium(Te 99.99%)Impurities(%): Cu 0.0035 ... Ultra High purity Tellurium(Te 99.99999%):The total content of Ag ,Al,Cd,Cu,Fe,Mg,Ni,Pb,Se ... 5kg/bagApplication:It is primary used in the manufacture of II-VI compound semiconductor,thermoelectric converting element,refrigerating element,piezocrystal and ...