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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:
2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
GLP compliance:
yes (incl. certificate)
Type of method:
static method
Specific details on test material used for the study:
Batch No. 2016/00027
Test no.:
#1
Temp.:
19.9 °C
Vapour pressure:
4.37 Pa
Remarks on result:
other: Run 1
Test no.:
#2
Temp.:
29.8 °C
Vapour pressure:
26.83 Pa
Remarks on result:
other: Run 1
Test no.:
#3
Temp.:
40 °C
Vapour pressure:
41.61 Pa
Remarks on result:
other: Run 1
Test no.:
#4
Temp.:
50.2 °C
Vapour pressure:
81.89 Pa
Remarks on result:
other: Run 1
Test no.:
#1
Temp.:
20.2 °C
Vapour pressure:
6.23 Pa
Remarks on result:
other: Run 2
Test no.:
#2
Temp.:
29.9 °C
Vapour pressure:
12.52 Pa
Remarks on result:
other: Run 2
Test no.:
#3
Temp.:
40.1 °C
Vapour pressure:
23.6 Pa
Remarks on result:
other: Run 2
Test no.:
#4
Temp.:
50 °C
Vapour pressure:
52.4 Pa
Remarks on result:
other: Run 2
Test no.:
#5
Temp.:
60.1 °C
Vapour pressure:
110 Pa
Remarks on result:
other: Run 2

Run 1: 14.7 g of sample was degassed for a total of 40 hours. The sample was initially degassed for 20 hours. However, outgassing of the test item was still observed. Consequently, it was decided to degas the material for an additional 20 hours. Starting pressure was 0.001 mbar.

Run 2: 15.2 g of sample was degassed for 63 hours. Starting pressure was 0.002 mbar. Significant outgassing was observed for approximately 5 minutes at the start of the degassing process.

Result : The vapour pressure value at 20°C is determined by interpolation/ extrapolation.

Conclusions:
The vapour pressure of the test item is 6 Pa at 20°C.

Description of key information

Key value for chemical safety assessment

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

Additional information