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Physical & Chemical properties

Vapour pressure

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Description of key information

The vapour pressure of 2-methylbut-2-ene is 621.5 hPa at 25°C.

Key value for chemical safety assessment

Vapour pressure:
621.5 hPa
at the temperature of:
25 °C

Additional information

No information on the primary source of the data or the methods used is available. However, this information is taken from a reliable peer reviewed handbook, Zwolinski et. al (1971), and so can be considered reliable and suitable for use as the key study for this endpoint. The vapour pressure of 2-methylbut-2-ene is 621.5 hPa at 25°C. The result is supported by data from the CRC Handbook (Lide 2008), which determined the vapour pressure to be 10 kPa at -15.8°C.