Process materials (gases and chemicals)

What must be watched for when handling metal-organic compounds such as trimethylgallium (TMGa), used as MOCVD sources?

  1. AThey are neither toxic nor reactive and are safe to handle
  2. BThey emit strong radiation
  3. CThey react violently with air and water and may ignite spontaneously
Show answer and explanation

Answer: C. They react violently with air and water and may ignite spontaneously

Metal-organic compounds such as trimethylgallium and trimethylaluminum ignite spontaneously in air and react violently with water. They are kept in special containers (bubblers), and their vapor is carried to the equipment by inert gas, so they never contact air or water.

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