BERYLLIUM OXIDE

• Catalog No.: Beryllium_oxide
• CAS Number: 1304-56-9
• M. F.: BeO
• M. W.: 25.011582

SYNONYMS

• IUPAC name: oxoberyllium
• IUPAC Systematic name: Oxoberyllium
• IUPAC Traditional name: beryllium oxide
• Synonyms: Beryllia; Super beryllia; Beryllia ceramic; Berlox; Thermalox

DATABASE IDS

• MeSH Name: beryllium+oxide
• PubChem CID: 14775
• Beilstein Number: 3902801
• Chemspider ID: 14092
• Wikipedia Title: Beryllium_oxide
• EC Number: 215-133-1
• CHEBI ID: 62842
• CAS Number: 1304-56-9

PROPERTIES

• Apperance: Colourless, vitreous crystals
• Bandgap: 10.6 eV
• Boiling Point: 3900°C
• Std enthalpy of formation: –599 kJ?mol^-1
• Density: 3.01 g cm^-3
• Melting Point: 2507°C
• Std molar entropy: 13.73–13.81 J?K^-1?mol^-1
• Odor: Odourless
• Refractive Index: 1.7
• Thermal Conductivity: 330 W K^-1 m^-1
• EU Index: 004-003-00-8
• GHS Signal Word: DANGER
• European Hazard Symbols: Highly toxic (T+)
• LD50: 2.062 mg kg^-1 (mouse, oral)
• NFPA704:
  

  0

  4

  0
• Risk Statements: R49, R25, R26, R36/37/38, R43, R48/23
• RTECS: DS4025000
• Safety Statements: S53, S45
• UN Number: 1566
• GHS Hazard statements: 301, 315, 317, 319, 330, 335, 350, 372
• GHS Precautionary statements: 201, 260, 280, 284, 301+310, 305+351+338