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Physical & Chemical properties

Melting point / freezing point

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Description of key information

Several independent sources indicate that melting point of phosphine is included in a

range -134°C / -133°C at 1013 hPa

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-133 °C

Additional information

The melting point of the substance is reported to be :

  • -133°C (Source: The Merck Index - Key study)
  • -133°C (Source: Biocidal Assessment Report for Aluminium Phosphide)
  • -134°C (Source: INRS publication)
  • -135°C (Source: World Health Organization)

A value of -133°C will be considered in this dossier