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Element Index

Gadolinium

Gallium

Germanium

Gold

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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Gallium arsenide

CAS no: 1303-00-0   Formula: GaAs   Molecular weight: 144.645

Physical Data

Appearance: Gray cubic crystals

Melting point: 1238°C
Boiling point: -

Density: 5.3176 g/cm3
Solubility: -


Thermodynamic Data

Enthalpy of formation: -71 kJ/mol
Gibbs energy of formation: -67.8 kJ/mol

Entropy: 64.2 J/mol K
Heat capacity: 46.2 J/mol K


Production and preparation


Behavior and Chemical Properties


History and Uses


Hazard, Storage and Handling

(Last update: August 2003)


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