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EC number: 231-388-1 | CAS number: 7526-26-3
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:
- 2012-01-17 - 2012-07-03
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 25 °C
- Vapour pressure:
- 0.009 Pa
- Transition / decomposition:
- no
- Conclusions:
- vapour pressure = 8.9E-3 Pa at 25°C
- Executive summary:
The vapour pressure of the test substance has been determined to be 8.9E-3 Pa at 25°C in a GLP study (2012) according to OECD 104 and EU method A.4 with a vapour pressure balance.
Reference
Summary of Results
A total of ten runs were completed for the main sequence. Equilibrium with regard to vapour pressure was assessed to have been reached over the final eight runs. Thus the final eight runs have been used to calculate the definitive vapour pressure value for the test item.
The values of vapour pressure at 25 °C interpolated from each graph are summarised in the following table:
| Run | Log10 [Vp(25°C)] |
| 3 | -2.04 |
| 4 | -2.08 |
| 5 | -2.08 |
| 6 | -2.04 |
| 7 | -2.03 |
| 8 | -2.06 |
| 9 | -2.04 |
| 10 | -2.03 |
| Mean | -2.05 |
| Vapour pressure | 8.9 x 10-3 Pa |
The test item did not change in appearance under the conditions used in the determination.
Description of key information
The vapour pressure of the test substance has been determined to be 8.9E-3 Pa at 25°C in a GLP study (2012) according to OECD 104 and EU method A.4 with a vapour pressure balance.
Key value for chemical safety assessment
- Vapour pressure:
- 0.009 Pa
- at the temperature of:
- 25 °C
Additional information
The key value was determined by the effusion method using a vapour pressure balance (EU Method A.4/OECD 104, 2012). As supporting information a calculation was performed with US-EPA software EPIWIN/MPBPWIN v1.44, resulting in a vapour pressure of 0.00994 Pa at 25 °C.
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.
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