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Physical & Chemical properties

Vapour pressure

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: by loss of weight or by trapping vaporisate
Temp.:
20 °C
Vapour pressure:
0.002 Pa
Temp.:
25 °C
Vapour pressure:
0.003 Pa
Conclusions:
The vapour pressure was calculated as being equal to 0.0022 Pa (2.2 x 10E-5 mbar) at 20 °C, and 0.003 Pa (3.0 x 10E-5 mbar) at 25 °C.

Executive summary:

The vapour pressure was measured using the Knudsen effusion method (mass-loss technique), according to the guidelines OECD 104/EU A.4. The quality of the apparatus was previously verified with the measurement of well-known reference compounds. Experiments were performed at three temperatures between 40 °C and 60 °C. Results permit the establishment of the relation between the vapour pressure of the compound and temperature, allowing the knowledge of the vapour pressure at different temperatures. Based on the results, the vapor pressure was calculated as being equal to 2.2 x 10-3 Pa (2.2 x 10-5 mbar) at 20 °C, and 3.0 x 10-3 Pa (3.0 x 10-5 mbar) at 25 °C.

Description of key information

Vapour pressure at 20 °C: 0.0022 Pa
Vapour pressure at 25 °C: 0.003 Pa

Key value for chemical safety assessment

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

Additional information

Reference:

Fonseca, 2014

Guideline:

OECD 104/EU A.4