Registration Dossier
Registration Dossier
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EC number: 939-424-4 | CAS number: 1469983-44-5
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:
- 28/03/2012 - 03/04/2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same 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
- Principles of method if other than guideline:
- Not relevant
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Transition / decomposition:
- no
- Conclusions:
- The vapour pressure of Diacid 1550 is 0.000045 Pa at 25ºC.
- Executive summary:
The vapour pressure of Diacid 1550 was determined according to OECD method 104 under GLP using the vapour pressure balance method. The vapour pressure was found to be 0.000045 Pa at 25ºC.
The vapour pressure at elevated temperature can be calculated from the following equation and the slope/intercept values provided in the test report: log10(VP(Pa))=(slope/T(K))+intercept. The vapour pressure at a given temperature is to be calculated using the following data and subsequently averaging the results: Run 1 – slope: -5.77E3, intercept: 15.1. Run 2 – slope: -5.86E3, intercept: 15.3. Run 3 – slope: -5.91E3, intercept: 15.4. Run 4 – slope: -5.90E3, intercept: 15.4. Run 5 – slope: -5.77E3, intercept: 15.0. Run 6 – slope: -5.73E3, intercept: 14.9. Run 7 – slope: -5.71E3, intercept: 14.9. Run 8 – unusable. Run 9 – slope: -5.93E3, intercept: 15.5. Run 10 – slope: -5.87E3, intercept: 15.3.
Reference
The result is the average of 9 measurements. The results from one of the tests runs were considered unusable due to the influence of an external factor (vibration) on the vapour pressure balance.
Description of key information
0.000045 Pa at 25ºC
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
The vapour pressure of Diacid 1550 was determined according to OECD method 104 under GLP using the vapour pressure balance method. The vapour pressure was found to be 0.000045 Pa at 25ºC.
The vapour pressure at elevated temperature can be calculated from the following equation and the slope/intercept values provided in the test report: log10(VP(Pa))=(slope/T(K))+intercept. The vapour pressure at a given temperature is to be calculated using the following data and subsequently averaging the results: Run 1 – slope: -5.77E3, intercept: 15.1. Run 2 – slope: -5.86E3, intercept: 15.3. Run 3 – slope: -5.91E3, intercept: 15.4. Run 4 – slope: -5.90E3, intercept: 15.4. Run 5 – slope: -5.77E3, intercept: 15.0. Run 6 – slope: -5.73E3, intercept: 14.9. Run 7 – slope: -5.71E3, intercept: 14.9. Run 8 – unusable. Run 9 – slope: -5.93E3, intercept: 15.5. Run 10 – slope: -5.87E3, intercept: 15.3.
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