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EC number: 244-848-1 | CAS number: 22224-92-6
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:
- from 2015-10-26 to 2015-10-30
- 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:
- effusion method: vapour pressure balance
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- The mean vapour pressure at 25 °C was 6.7E-5 Pa.
- Executive summary:
An experimental study was conducted to determine the vapour pressure of the test item according to EU Method A.4. and OECD Test Guideline 104 using a vapour pressure balance. The vapour pressure at 25 °C was extrapolated from the linear regression of the vapour pressure curve of the measurements performed in the range of 45 to 85 °C. The mean vapour pressure at 25 °C was 6.7E-5 Pa.
Reference
An initial run was conducted at temperatures below the melting temperature of the test substance; however, it was found that the response from the instrument was too low to provide an accurately determined result and therefore this run was disregarded. The subsequent runs were determined at temperatures above the melting temperature of the test substance.
| Run 2 | Run 3 |
Correlation | 0.9722 | -0.9953 |
Slope | -4905.8 | -5282.6 |
Intercept | 12.27 | 13.55 |
log Vp at 25 °C | -4.18 | -4.16 |
Vp (Pa) at 25 °C | 6.6E-5 | 6.9E-5 |
Description of key information
The mean vapour pressure at 25 °C was 6.7E-5 Pa.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
An experimental study was conducted to determine the vapour pressure of the test item according to EU Method A.4. and OECD Test Guideline 104 using a vapour pressure balance. The vapour pressure at 25 °C was extrapolated from the linear regression of the vapour pressure curve of the measurements performed in the range of 45 to 85 °C. The mean vapour pressure at 25 °C was 6.7E-5 Pa.
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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