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Physical & Chemical properties

Appearance / physical state / colour

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Administrative data

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Description of key information

Butenes are colourless gases at standard temperature and pressure.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
gaseous

Additional information

The data reported is derived from the members of the butenes category (but-1-ene (CAS 106-98-9), 2-butene (CAS 107-01-7) and 2-methylpropene (CAS 115-11-7)) and was obtained from the CRC Handbook (Lide 2008). This handbook is peer-reviewed and is considered reliable and suitable for use as a key study for this endpoint. Butenes are colourless gases at standard temperature and pressure.