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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 18 to 27 January 2012
Reliability:
1 (reliable without restriction)
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
yes
Remarks:
Fresh samples need to be used for the assessment of vapour pressure at the various testing temperatures: no impact on the integrity of the study data
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
yes
Remarks:
Fresh samples need to be used for the assessment of vapour pressure at the various testing temperatures: no impact on the integrity of the study dat
GLP compliance:
yes (incl. certificate)
Type of method:
effusion method: by loss of weight or by trapping vaporisate
Remarks:
Knudsen cell
Temp.:
20 °C
Vapour pressure:
0.293 Pa
Temp.:
25 °C
Vapour pressure:
0.344 Pa
Transition / decomposition:
no
Transition temp.:
> 20 - < 350 °C
Conclusions:
The experimentally-determined mean vapour pressures of CAE at temperatures of 20°C and 25°C were obtained and are shown below:
0.2929 at 20°C
0.3439 at 25°C
Executive summary:

Vapour pressures of CAE at 20°C and 25°C were determined to be 0.2929 and 0.3439 respectively according to EC Method A4 and OECD guideline 104 (Effusion method: knudsen cell).

Description of key information

2 vapour pressure values are available. The highest value is used in the risk assessment as a worst case.

Key value for chemical safety assessment

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

Additional information