Description
Selenium occurs in an amorphous form (red selenium) or as a grey silvery metal. The amorphous form is a glass-like solid while the metal form is soft.
Under influence of light the electrical conductivity increases. Photoconductivity is an outstanding physical property of crystalline selenium.
Forms Supplied
Pure metal:
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99.99% (4N) purity
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99.999% (5N) purity
Compounds:
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Selenium dioxide (SeO2)
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Sodium selenite (Na2SeO3)
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Zinc selenite (ZnSeO3)
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Sodium selenate (Na2SeO4)
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Selenous acid (H2Se03)
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Sodium hydrogen selenite (NaHSeO3)
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Barium selenite (BaSeO3)
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Potassium selenite (K2SeO3)
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Sodium selenate decahydrate (Na2SeO4.10H2O)
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Barium selenate (BaSeO4)
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Potassium selenate (K2SeO4)
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Selenium dimethyldithiocarbamate (C12H24N4S8Se)
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Selenium sulfide (SeS2)
Alloy:
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Selenium Arsenic (As2Se3)
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Iron selenide (FeSe)
Typical Applications
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Pharmaceutical manufacture.
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Infrared optics.
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Alloy solders used in the manufacture of semiconductor devices.
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Widely used for the manufacture of pigments.
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Provides essential micronutrients in animal feeds.
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Catalyst materials.
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Electrolytic processing of manganese.
