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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:
October 9, 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Test method according to EU Method A.4 and OECD Guideline 104. GLP study.
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
effusion method: vapour pressure balance
Remarks:
(Knudsen cell)
Key result
Temp.:
20 °C
Vapour pressure:
0.016 Pa
Key result
Temp.:
25 °C
Vapour pressure:
0.034 Pa

Vapour pressure of the test substance at 20 °C and 25 °C was calculated on the basis of equation log (P) = f (1/t) = a-b/(t+273.15) where P – vapour pressure in Pa, t – temperature in °C, obtained for four measurement points: 60.40 °C, 66.60 °C and 72.60 °C.

Conclusions:
The vapor pressure of the test substance was determined to be 0.0162 Pa at 20 ºC and 0.0336 Pa at 25 ºC.
Executive summary:

The study of vapour pressure using effusion method was performed in accordance with EU Method A.4 and OECD Guidance 104. GLP study. The vapor pressure of the test substance was determined to be 0.0162 Pa at 20 ºC and 0.0336 Pa at 25 ºC.

Description of key information

Key study: EU method A.4 and OECD Guidance 104. GLP study. The vapor pressure of the test substance was determined to be 0.0162 Pa at 20 ºC and 0.0336 Pa at 25 ºC.

Key value for chemical safety assessment

Vapour pressure:
0.034 Pa
at the temperature of:
25 °C

Additional information

Key study: The study of vapour pressure using effusion method was performed in accordance with EU Method A.4 and OECD Guidance 104. GLP study. The vapor pressure of the test substance was determined to be 0.0162 Pa at 20 ºC and 0.0336 Pa at 25 ºC.