Registration Dossier
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EC number: 452-810-2 | 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:
- 21 January - 10 March 2004
- 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:
- yes (incl. QA statement)
- Type of method:
- gas saturation method
- Specific details on test material used for the study:
- - Batch: 00410155
- Purity: 96%
- Expiry date: 05 May 2004
- Storage conditions: at room temperature at about 20°C, away from direct sunlight - Temp.:
- 25 °C
- Vapour pressure:
- 0.005 Pa
- Remarks on result:
- other: Experimentally determined.
- Temp.:
- 35 °C
- Vapour pressure:
- 0.017 Pa
- Remarks on result:
- other: Experimentally determined.
- Temp.:
- 45 °C
- Vapour pressure:
- 0.066 Pa
- Remarks on result:
- other: Experimentally determined.
- Temp.:
- 25 °C
- Vapour pressure:
- 0.005 Pa
- Remarks on result:
- other: Extrapolation based on the simplified Clausius-Clapeyron equation.
- Conclusions:
- Extrapolation of the vapour pressure of T002251 based on the simplified Clausius-Clapeyron equation resulted in a vapour pressure of 4.7E-03 Pa at 25°C. This value is in excellent agreement with the value determined by direct measurements at 25°C, which was 5.1E-03 Pa.
Reference
To ensure saturation control, three flow rates were used at each temperature. From the results it could be concluded that higher flow rates did not lead to lower vapour pressures which means that the nitrogen was saturated with test item under the conditions of the test.
The good reproducibility and the high trapping efficiency (90.3 - 100%) led to the conclusion that the results of the vapour pressure determination of the test item T002251 are reliable.
Description of key information
The vapour pressure of T002251 was determined using the gas saturation method according to the guidelines OECD 104 and EU A.4 (K1, Tognucci, 2004). Direct measurement at 25°C resulted in a vapour pressure of 5.1E-03 Pa, which is in agreement with the value assessed by extrapolation based on the simplified Clausius-Clapeyron equation which resulted in a vapour pressure of 4.7E-03 Pa at the same temperature.
Key value for chemical safety assessment
- Vapour pressure:
- 0.005 Pa
- at the temperature of:
- 25 °C
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
