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EC number: 937-924-7 | CAS number: -
Vapour pressure
Administrative data
Link to relevant study record(s)
- 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
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- no
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
- Type of method:
- effusion method: Knudsen cell
- Key result
- Test no.:
- #9
- Temp.:
- ca. 150 °C
- Vapour pressure:
- 0.015 Pa
- Conclusions:
- Vapour pressure at 150 °C: 1.47* 10-02Pa
- Executive summary:
1 Results
Vapour pressure was examined at nine different temperatures. No temperatures could be evaluated as they showed no reproducible or relevant weight loss.
As a calculation on base of the measured weight losses is not possible, the highest vapour pressure, derived from all measurements, is stated as limit value. At the first measurement of experiment 1 (30 °C) impurities like water can yield a higher vapour pressure, therefore these measurements were not taken into account.
Vapour pressure at 150 °C: 1.47* 10-02Pa
Reference
Calculation Results Experiment 9
Experiment |
9 |
|
|
|
|
|
|
|
|
||
Real Temperature in K |
423.2 |
|
|
|
|
|
|
|
|
||
Real Temperature in °C |
150.0 |
|
|
|
|
|
|
|
|
||
Date of Measurement |
29.06.2017 11:45 |
30.06.2017 11:30 |
04.07.2017 12:00 |
||||||||
Elapsed Time in s |
82200 |
82500 |
91800 |
||||||||
Parameter |
Weight loss |
to be used |
Vapour pressure |
Weight loss |
to be used |
Vapour pressure |
Weight loss |
to be used |
Vapour pressure |
||
Unit |
g |
yes/no |
Pa |
g |
yes/no |
Pa |
g |
yes/no |
Pa |
||
Knudsen-cell 1 |
0.00009 |
yes |
2.65E-04 |
0.00000 |
yes |
0.00E+00 |
0.00544 |
yes |
1.44E-02 |
||
Knudsen-cell 2 |
0.00010 |
yes |
2.95E-04 |
0.00000 |
yes |
0.00E+00 |
0.00522 |
yes |
1.38E-02 |
||
Knudsen-cell 3 |
-0.00007 |
yes |
-2.06E-04 |
0.00000 |
yes |
0.00E+00 |
0.00571 |
yes |
1.51E-02 |
||
Knudsen-cell 4 |
-0.00001 |
yes |
-2.95E-05 |
0.00000 |
yes |
0.00E+00 |
0.00593 |
yes |
1.57E-02 |
||
Mean |
|
yes |
8.11E-05 |
|
yes |
0.00E+00 |
|
yes |
1.47E-02 |
||
Standard deviation: |
|
|
2.41E-04 |
|
|
0.00E+00 |
|
|
8.19E-04 |
||
Mean of measured values: |
|
4.933E-03 |
|
|
|
|
|
|
|||
Standard deviation: |
|
8.473E-03 |
RSD: |
171.8% |
|
|
|
|
|||
Vapour pressure was examined at nine different temperatures. No temperatures could be evaluated as they showed no reproducible or relevant weight loss.
As a calculation on base of the measured weight losses is not possible, the highest vapour pressure, derived from all measurements, is stated as limit value. At the first measurement of experiment 1 (30 °C) impurities like water can yield a higher vapour pressure, therefore these measurements were not taken into account.
Vapour pressure at 150 °C: 1.47* 10-02Pa
Description of key information
Calculation Results Experiment 9
Experiment |
9 |
|
|
|
|
|
|
|
|
||
Real Temperature in K |
423.2 |
|
|
|
|
|
|
|
|
||
Real Temperature in °C |
150.0 |
|
|
|
|
|
|
|
|
||
Date of Measurement |
29.06.2017 11:45 |
30.06.2017 11:30 |
04.07.2017 12:00 |
||||||||
Elapsed Time in s |
82200 |
82500 |
91800 |
||||||||
Parameter |
Weight loss |
to be used |
Vapour pressure |
Weight loss |
to be used |
Vapour pressure |
Weight loss |
to be used |
Vapour pressure |
||
Unit |
g |
yes/no |
Pa |
g |
yes/no |
Pa |
g |
yes/no |
Pa |
||
Knudsen-cell 1 |
0.00009 |
yes |
2.65E-04 |
0.00000 |
yes |
0.00E+00 |
0.00544 |
yes |
1.44E-02 |
||
Knudsen-cell 2 |
0.00010 |
yes |
2.95E-04 |
0.00000 |
yes |
0.00E+00 |
0.00522 |
yes |
1.38E-02 |
||
Knudsen-cell 3 |
-0.00007 |
yes |
-2.06E-04 |
0.00000 |
yes |
0.00E+00 |
0.00571 |
yes |
1.51E-02 |
||
Knudsen-cell 4 |
-0.00001 |
yes |
-2.95E-05 |
0.00000 |
yes |
0.00E+00 |
0.00593 |
yes |
1.57E-02 |
||
Mean |
|
yes |
8.11E-05 |
|
yes |
0.00E+00 |
|
yes |
1.47E-02 |
||
Standard deviation: |
|
|
2.41E-04 |
|
|
0.00E+00 |
|
|
8.19E-04 |
||
Mean of measured values: |
|
4.933E-03 |
|
|
|
|
|
|
|||
Standard deviation: |
|
8.473E-03 |
RSD: |
171.8% |
|
|
|
|
|||
Key value for chemical safety assessment
- Vapour pressure:
- 0.015 Pa
- at the temperature of:
- 150 °C
Additional information
Results
Vapour pressure was examined at nine different temperatures. No temperatures could be evaluated as they showed no reproducible or relevant weight loss.
As a calculation on base of the measured weight losses is not possible, the highest vapour pressure, derived from all measurements, is stated as limit value. At the first measurement of experiment 1 (30 °C) impurities like water can yield a higher vapour pressure, therefore these measurements were not taken into account.
Vapour pressure at 150 °C: 1.47* 10-02Pa
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