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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Boiling point

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Administrative data

Link to relevant study record(s)

Description of key information

The boiling point of 2-methybut-2-ene is 38.56 °C at 101.325 kPa. 

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
311.71 K

Additional information

No information on the primary source of this data or the methods used is available. However, this information is taken from a reliable peer reviewed handbook, Lide (2008) and so can be considered reliable and suitable for use as the key study for this endpoint. The boiling point of 2-methylbut-2-ene is 38.56 °C at 101.325 kPa. The data are supported by results from the Merck Handbook (O'Neil 2006), which determined the boiling point to be 37.5 - 38.5°C.