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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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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vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
not specified
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: GLP status not known, information from a published handbook, acceptable with restrictions
Justification for type of information:
Principles of method if other than guideline:
The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the Handbook of Vapor Pressures and Heats of Vapourization of Hydrocarbons and Related Compounds states that data included has been collected, calculated, critically selected and compiled. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.
GLP compliance:
not specified
No data reported
Type of method:
other: No data reported
Specific details on test material used for the study:
not specified
Key result
-90 °C
Vapour pressure:
212.4 kPa
Remarks on result:
other: No further details provided


The vapour pressure of ethylene is 212 4hPa at -90˚C
Executive summary:

The vapour pressure of ethylene is 2124 hPa at -90˚C. No information on the methods used is available. However, this information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Description of key information

The vapour pressure of ethylene is 2124 hPa at -90˚C.

Key value for chemical safety assessment

Vapour pressure:
212.4 kPa
at the temperature of:
-90 °C

Additional information

The handbook by Zwolinski and Wilhoit (1971) is peer reviewed and is considered reliable and suitable for use as the key study for this endpoint. The supporting study (World Health Organisation 1996) is taken from a peer reviewed database and reports a value of 8100 kPa at 15°C.