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CAS No 1302-09-6 , selenium

  • Name: selenium
  • Synonyms: Silver selenide (Ag2Se); Silver(I) selenide;selenium;silver; Disilver selenide; (argentioselanyl)silver; 400637_ALDRICH;1302-09-6;
  • CAS Registry Number:
  • Transport: UN 3283 6.1/PG 2
  • Flash Point: °C
  • Boiling Point: °Cat760mmHg
  • Density: 8.22 g/mL at 25 °C(lit.)
  • Safety Statements: Hazard Codes T,NRisk Statements 23/25-33-50/53Safety Statements 20/21-28-45-60-61RIDADR UN 3283 6.1/PG 2 WGK Germany 3 HazardClass 6.1(b)PackingGroup III
  • Hazard Symbols: T: Toxic;N: Dangerous for the environment;
  • Flash Point: °C
  • EINECS: 215-099-8
  • Molecular Weight: 294.6964
  • InchiKey: GNWCVDGUVZRYLC-UHFFFAOYSA-N
  • InChI: InChI=1S/2Ag.Se
  • Risk Statements: 23/25-33-50/53
  • Molecular Formula: Ag2Se
  • Molecular Structure:CAS No:1302-09-6 selenium

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References of selenium
Title: Silver Selenide
CAS Registry Number: 1302-09-6
Molecular Formula: Ag2Se
Molecular Weight: 294.70
Percent Composition: Ag 73.21%, Se 26.79%
Literature References: Occurs in nature as the mineral naumannite. Prepd by melting silver and selenium together and by passing hydrogen selenide into a soln of silver nitrate: Berzelius, cited by Mellor, A Comprehensive Treatise on Inorganic and Theoretical Chemistry 10, 771 (1930); by combination of ions or elements in solns or melts: Kulifay, US 3026175 (1962 to Monsanto).
Properties: Gray, hexagonal, microscopic needles. mp 880°. d15 8.216. Two forms exist; transition temp at 133°. Forms metallic silver and selenium oxide when heated in oxygen; transformed by chlorine into silver and selenium chlorides; oxidized to silver selenite by fuming nitric acid. Sol in molten silver or bismuth without chemical change. Practically insol in water.
Melting point: mp 880°
Density: d15 8.216