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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Description of key information

At 63.8 and 145.5 °C the vapour pressure was 1.5E-4 and 1.8E-3 Pa, resp., but it descended perpetually down to the detection limit of 1E-4 Pa. It was concluded that vapour pressure at 20 and 50°C is below 1E-4 Pa. The test item stayed liquid, so the low volatility was not attributable to a polymerized material.

Vapour pressure at 40°C has been estimated as 2.05 E-9 Pa using the QSAR MPBPWIN v1.43 for the most volatile of the 3 smallest components of the UVCB (component 2, DGEBA diacrylate, 2OH). This QSAR estimate is fully reliable since another estimate at 145.5°C (1.74E-3 Pa) matched perfectly the experimental value.

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
40 °C

Additional information

This conservative value is taken to calculate saturated vapour concentration (Csat). As it is the detection limit, it is potentially a large overestimate, as suggested by QSAR estimates.