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CAS 7782-49-2

:

Selenium

Description:
Selenium is a non-metallic element with the atomic number 34 and is classified as a chalcogen in group 16 of the periodic table. It exhibits several allotropes, the most stable of which is a gray, metallic-looking form. Selenium is known for its semiconductor properties, making it valuable in electronic applications, particularly in photocells and solar cells. It is also utilized in glassmaking to decolorize glass and in the production of pigments. Selenium is essential in trace amounts for certain organisms, including humans, where it plays a critical role in antioxidant enzyme functions. However, it can be toxic in higher concentrations, leading to selenosis, which is characterized by symptoms such as gastrointestinal distress and neurological issues. Selenium compounds can exhibit various oxidation states, typically ranging from -2 to +6, influencing their reactivity and applications. Its CAS number, 7782-49-2, is a unique identifier used to specify this element in chemical databases and regulatory documents. Overall, selenium is a versatile element with both beneficial and hazardous properties, depending on its form and concentration.
Formula:Se
InChI:InChI=1S/Se
InChI key:InChIKey=BUGBHKTXTAQXES-UHFFFAOYSA-N
SMILES:[Se]
Synonyms:
  • B-TRAXIM Se
  • Selen
  • Selenio
  • Selenium (Se)
  • Selsaf 2000
  • Serendipita MKCA6-3
  • selenide
  • Selenium
  • VANDEX
  • C.I. 77805
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