Selenium Powder

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Selenium Powder
Posting date : Apr 15, 2010
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29-
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Property : Amorphous red powder/ingot, When heated, it turns to crystal and turns into during the long term storage. The S.G.of Crystalloid Selenium powder is 4.5g/cm3, with M.P.of 685℃; Amorphous selenium will soften at 40℃ and melt at 217℃. Crystalloid selenium with property of semiconductor is dissoluble in strong nitric and alkali. Selenium can be alloyed with silver, copper, zinc and lead, low toxicity. Usage : Used in pharmaceutical, chemical, glass, electronic, metallurgy, ceroscopy industry. Package : N.W. 25kg in iron drum lined with plastic film bag. Index YS/T223-1996, trademark Se-3, Se 99.9% Min Item Test Value(%) Se ≥99.9 As ≤0.01 Te ≤0.01 Pb ≤0.02 Cu ≤0.002 Hg ≤0.005 Ni ≤0.002 Na ≤0.001 Sb ≤0.002 Sn ≤0.002 Fe ≤0.005 Bi ≤0.005 S ≤0.01 Si ≤0.002 Average Granularity -200 Mesh

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