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Element Index (B)

Barium

Beryllium

Bismuth

Bromine

Boron

Chemical's truth
Ricin is a natural poison extracted from the castor oil bean with a quoted LD50 of 20,000 ng/kg.


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Beryllium oxide

CAS no: 1304-56-9   Formula: BeO   Molecular weight: 25.011

Physical Data

Appearance: Hexagonal white crystals or powder

Melting point: 2577C
Boiling point: -

Density: 3.01 g/cm3
Solubility: -


Thermodynamic Data

Enthalpy of formation: -609.4 kJ/mol
Gibbs energy of formation: -580.1 kJ/mol

Entropy: 13.8 J/mol K
Heat capacity: 25.6 J/mol K


Production and preparation


Behavior and Chemical Properties

BeO insulates electrically like a ceramic but conducts heat like a metal.


History and Uses

(Last update: March 2003)


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