... manufacture of II-VI compound semiconductor, thermoelectric converting element, refrigerating Tellurium (Te)1, Physical character:Atomic Weight: 127.60Electronegative: 2. ... : 452 °CBoiling Point: bp: 1390 °CBandwidth: 0.35 eV2, Specification:High Purity Tellurium:Te-05 Grade 99.999. The content of ... , Ni, Pb, Se, Si & Zn is bellow 1 ppm;Uitra High Purity Tellurium:Te-07 Grade 99.99999. The content of ...