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EC number: 241-997-4 | CAS number: 18096-62-3
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:
- 18-Sep-2014 to 19-Sep-2014
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- GLP compliance:
- no
- Type of method:
- effusion method: vapour pressure balance
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.18 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.35 Pa
- Key result
- Temp.:
- 50 °C
- Vapour pressure:
- 6.8 Pa
- Conclusions:
- Vapour pressure values of 0.18 Pa (at 20 °C), 0.35 Pa (at 25 °C) and 6.8 Pa (at 50 °C) were determined for the test substance according to E.U. Method A.4.
Reference
Results
The vapour pressure was measured in the temperature range of 21 to 34 °C. The measured vapour pressure values together with the measured temperatures are listed in the table.
Results of the Effusion method
No. |
Temperature / °C |
Vapour pressure / Pa |
1 |
21 |
2.20 x 10-1 |
2 |
23 |
2.65 x 10-1 |
3 |
25 |
3.33 x 10-1 |
4 |
27 |
4.30 x 10-1 |
5 |
29 |
5.75 x 10-1 |
6 |
32 |
8.54 x 10-1 |
7 |
34 |
1.10 x 100 |
Final results
The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C, according to Regulation EC 440/2008 Method A.4. Vapour Pressure, OECD Test Guideline No. 104 (2006), and OCSPP Test Guideline 830.7950 (1996).
Calculated vapour pressure values for 20, 25 and 50 °C
Temperature / °C |
Vapour pressure / Pa |
20 |
1.8 x 10-1 |
25 |
3.5 x 10-1 |
50 |
6.8 x 100 |
Description of key information
Vapour pressure: 0.35 Pa at 25 °C (EU Method A.4, effusion method: vapour pressure balance)
Key value for chemical safety assessment
- Vapour pressure:
- 0.35 Pa
- at the temperature of:
- 25 °C
Additional information
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