Registration Dossier
Registration Dossier
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EC number: 500-130-2 | CAS number: 55818-57-0
Vapour pressure
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.
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