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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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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Reference
Endpoint:
vapour pressure
Type of information:
(Q)SAR
Adequacy of study:
key study
Study period:
2018
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Justification for type of information:
EPA EPIWIN estimation
Qualifier:
no guideline required
Principles of method if other than guideline:
EPA EPIWIN estimation
GLP compliance:
no
Key result
Test no.:
#1
Temp.:
25 °C
Vapour pressure:
2 170 Pa
Conclusions:
The vapour pressure of oct-2-ene is estimated by EPA EPIWIN at 2170 Pa at 25 deg C

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:
2 170 Pa
at the temperature of:
25 °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.

The vapour pressure of oct-2-ene is estimated by EPA EPIWIN at 2170 Pa at 25 deg C