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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:
5 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.