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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Vapour pressure

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Description of key information

A trend of decreasing vapour pressure with increasing carbon number is seen for category members.

Key value for chemical safety assessment

Vapour pressure:
0.115 Pa
at the temperature of:
20 °C

Additional information

Vapour pressure decreases with increasing carbon number across the category, with a very similar trend for both the alpha olefins and olefins. Data is available for category members with carbon numbers of C6 to C28. At C6 vapour pressure is around 200 hPa at 20°C, decreasing to <1 hPa by C12.