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Vapour pressure

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Description of key information

2-(2-(2-ethoxyyethoxy)ethoxy)ethanol: 1.15Pa @ 20C estimated from Antoine constants measured at elevated temperature.  1Pa @20C (QSAR)
2-(2-(2-ethoxyethoxy)ethoxy)ethanol: QSAR prediction 0.3Pa @ 20C
3,6,9,12-tetraoxatetradecan-1-ol: QSAR prediction 0.012Pa @ 20C

Key value for chemical safety assessment

Vapour pressure:
1 Pa
at the temperature of:
20 °C

Additional information

There is not data available for the UVCB substance itself. Measured data is available for the lowest molecular weight main component, 2-(2-(2-ethoxyyethoxy)ethoxy)ethanol, indicating that the vapour pressure at 20C would be approximately 1Pa. A reliable QSAR predicts a similar value for the vapour pressure of this same substance and that the higher molecular weight main component, not surprisingly, has a much lower vapour pressure. On the reasonable assumption that the lower molecular weight main component will dominate the vapour pressure, the measured vapour pressure for 2-(2-(2-ethoxyethoxy)ethoxy)ethanol will be used to derive the key parameter for this end point.