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EC number: 270-485-3 | CAS number: 68442-68-2
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:
- 2016/03/10 - 2016/03/15
- 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:
- 23 March 2006
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 30 May 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- The Vapour Pressure Balance was not formally validated; However, scheduled calibration checks of system performance were successfully performed confirming the accuracy and validity of the data generated for this study.
- Type of method:
- effusion method: vapour pressure balance
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- The vapour pressure of the test item has been determined to be 2.1 x 10-4 Pa at 25 °C, using the vapour pressure balance method, designed to be compatible with Method A4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 104 of the OECD Guidelines for Testing of Chemicals, 23 March 2006 without deviations. The study was conducted in accordance with the principles of GLP. Hence, the obtained results can be considered as reliable (Klimisch 1).
- Executive summary:
The vapour pressure of Benzenamine, N-phenyl, styrenated was determined according to OECD TG 104 and EU method A.4.
Summary of results
The values of vapour pressure at 25 °C extrapolated from each graph are summarized in the following table:
Table 5 Summary of Vapour Pressure Data
Run
Log 10 [Vp(25°C)]
7
-3.65
8
-3.66
9
-3.64
10
-3.76
Mean
-3.68
Vapour Pressure
2.11x 10-4Pa
The test item did not change in appearance under the conditions used in the determination.
Discussion
A total of 10 runs were completed for the main sequence. Equilibrium with regard to vapour pressure was assessed to have been reached over the final 4 runs, thus the final 4 runs have been used to calculate the definitive vapour pressure value for the test item.
Conclusion
The vapour pressure of the test item has been determined to be 2.1 x 10-4 Pa at 25 ºC.
Reference
Description of key information
vapour pressure: 2.1 x 10-4 Pa (25 °C) (OECD 104, GLP)
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
The vapour pressure of the test item has been determined to be 2.1 x 10-4 Pa at 25 °C, using the vapour pressure balance method, designed to be compatible with Method A4 Vapour Pressure of Commission Regulation (EC) No 440/2008 and Method 104 of the OECD Guidelines for Testing of Chemicals without deviations. The study was conducted in accordance with the principles of GLP.
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