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EC number: 942-655-3 | CAS number: 1802727-84-9
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:
- from 2016-02-24 to 2016-07-18
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 2006
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 2009
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Version / remarks:
- 1996
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: Knudsen cell
- Key result
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- 1.04 Pa
- Test no.:
- #2
- Temp.:
- 25 °C
- Vapour pressure:
- 1.7 Pa
- Conclusions:
- The vapour pressure of the test item was determined at three different temperatures (30, 40 and 50 °C) following EU A.4 using the effusion method (weight loss). Vapour pressure was determined to be 1.04 Pa at 20 °C and 1.7 Pa at 25 °C, respectively.
- Executive summary:
The vapour pressure of the test item was determined following OECD 104 and EU A.4 using the effusion method (weight loss). Vapour pressure was examined at three different temperatures. All temperatures could be evaluated as they showed reproducible weight loss. For these temperatures, 1/T was plotted against log (P). The graph 1/T vs. log (P) showed a straight line with a correlation coefficient of - 0.9970. For the test item, the following vapour pressures at 20 °C and at 25 °C were calculated from the regression equation:
Vapour pressure at 20 °C: 1.04 Pa
Vapour pressure at 25 °C: 1.70 Pa
Reference
Table 1 Vapour Pressures (Effusion Method)
Experiment |
T |
Mean P |
Stand. Dev. P |
RSD P |
No. |
K |
Pa |
Pa |
% |
1 |
303.2 |
2.64 |
5.06E-01 |
19.2 % |
2 |
313.2 |
7.36 |
6.74E-01 |
9.2 % |
3 |
323.2 |
1.53E+01 |
1.96 |
12.8 % |
In this table, E-0X represents multiplication with 10-x.
Stand. Dev. = Standard Deviation; RSD = Relative Standard Deviation
Description of key information
The vapour pressure of the test item was determined at three different temperatures (30, 40 and 50 °C) following EU A.4 using the effusion method (weight loss). Vapour pressure was determined to be 1.04 Pa at 20 °C and 1.7 Pa at 25 °C, respectively.
Key value for chemical safety assessment
- Vapour pressure:
- 1.7 Pa
- at the temperature of:
- 25 °C
Additional information
The vapour pressure of the test item was determined following OECD 104 and EU A.4 using the effusion method (weight loss). Vapour pressure was examined at three different temperatures. All temperatures could be evaluated as they showed reproducible weight loss. For these temperatures, 1/T was plotted against log (P). The graph 1/T vs. log (P) showed a straight line with a correlation coefficient of - 0.9970. For the test item, the following vapour pressures at 20 °C and at 25 °C were calculated from the regression equation:
Vapour pressure at 20 °C: 1.04 Pa
Vapour pressure at 25 °C: 1.70 Pa
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