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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:
February 08 to May 30, 2022
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
conducted under GLP conditions
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
2006
Deviations:
yes
Remarks:
See 'Any other information on materials and methods incl. tables' section
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
yes
Remarks:
See 'Any other information on materials and methods incl. tables' section
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Deviations:
yes
Remarks:
See 'Any other information on materials and methods incl. tables' section
GLP compliance:
yes (incl. QA statement)
Type of method:
gas saturation method
Key result
Temp.:
20 °C
Vapour pressure:
0.5 Pa
Remarks on result:
other: Average of three sampling time-points

Headspace vapour concentrations of the test substance as found after an equilibration time of 96, 120, 144, 168 and 240 hours are exposed in the table below:



































Equilibration time (h)Headspace concentration (microg/L)Headspace concentration (g/m3)
9636.50.365
12032.00.320
14432.40.0324
16831.80.0318
24032.90.0329

The vapour pressure at 20°C was calculated from the average headspace concentration of 144 h, 168 hand 240 h samplings using equation described in material and methods section.
The result was 0.5 Pa.

Conclusions:
Vapour pressure of the test substance: 0.5 Pa at 20°C
Executive summary:

The vapour pressure of the test material has been determined to be 0.5 Pa at 20°C using the Gas saturation method (OECD guideline No. 104).
Therefore:
Vapour pressure of the test material: 0.5 Pa at 20°C

Description of key information

The vapour pressure of the test material has been determined to be 0.5 Pa at 20°C using the Gas saturation method (OECD guideline No. 104).
Therefore:
Vapour pressure of the test material: 0.5 Pa at 20°C

Key value for chemical safety assessment

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

Additional information