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Physical & Chemical properties

Vapour pressure

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Administrative data

Link to relevant study record(s)

Description of key information

0.00347mmHg @ 25C (equivalent to 0.46Pa) - calculated
<0.01mmHg @ 25C (equivalent to <1.33Pa)
<0.013hPa at 20C
<2Pa at 20C (estimated from measured value of 0.076hPa at 40C)
~1Pa at 20C (estimated from Antoine constants determined at higher temperatures)
2.1hPa at 90C

Key value for chemical safety assessment

Vapour pressure:
1 Pa
at the temperature of:
298 K

Additional information

Reasonably consistent values are available from multiple sources, including values at different temperatures. Not all are absolute measurements - some are limit values and some are estimates based on measured data at higher temperatures. The key parameter is taken as a weight of evidence average across the available data and it can be concluded that the vapour pressure at ambient conditions is exceedingly low.