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Physical & Chemical properties

Vapour pressure

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vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
June 11, 1996 - April 3, 1998
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
EU Method A.4 (Vapour Pressure)
GLP compliance:
yes (incl. QA statement)
Type of method:
gas saturation method
10 °C
Vapour pressure:
0.006 Pa
15 °C
Vapour pressure:
0.011 Pa
20 °C
Vapour pressure:
0.021 Pa
25 °C
Vapour pressure:
0.037 Pa
Transition / decomposition:
Vapour pressure at room temperature (20 degrees Celsius): 0.02076 Pa (= 0.0002076 mbar)

Description of key information

NBDI: vapour pressure at room temperature: 0.02076 Pa (= 0.0002076 mbar), determined by the gas saturation method.
NBDA: the vapour pressure of this substance has been calculated with the QSAR Model MPBVP (version 1.43). The vapour pressure is calculated to be 2.25 Pa at 25 degrees Celsius.

Key value for chemical safety assessment

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

Additional information

For the human health part of the CSA, the key value for CSA is the vapour pressure of NBDI (0.02076 Pa at 20 degrees Celsius) and for the environmental part of the CSA, the key value for CSA is the vapour pressure of NBDA (2.25 Pa at 25 degrees Celsius).