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Physical & Chemical properties

Vapour pressure

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Description of key information

The vapour pressure at 20°C of 1,1,1,2-tetrafluoroethane (HFC 134a) was measured to be 5.74 Bar.

Key value for chemical safety assessment

Additional information

The vapour pressure curve was determined for 1,1,1,2 -tetrafluoroethane (HFC 134a) over temperature range 235K (-38°C) and 313K (+40°C) using automated differential pressure apparatus. The vapour pressure at 20°C was measured to be 5.74 Bar.