Registration Dossier
Registration Dossier
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EC number: 421-750-9 | CAS number: 57280-22-5 TRIOXABICYCLOOCTAN; TRIOXABICYCLOOCTANE
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:
- 04 Oct - 12 Dec 1995
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 92/69/EEC
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- gas saturation method
- Remarks:
- A modified gas saturation method using a head space chromatographic apparatus was used.
- Test no.:
- #1
- Temp.:
- 25 °C
- Vapour pressure:
- 39.6 Pa
- Key result
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- 30.5 Pa
- Conclusions:
- The vapour pressure of the test substance was was P20=30.5 Pa at 20°C andP25=39.6 Pa at 25°C.
- Executive summary:
The study was performed to determine the vapour pressure of the test substance by a modified gas saturation method using a head space chromatographic apparatus in accordance with EC Testing Guideline A.4. The saturation experimetns were done in triplicate and the vapour pressure of the test substance was P20=30.5 Pa at 20 °C and P25=39.6 Pa at 25°C.
Reference
Validity criteria for the measurement of the vapour pressure:
| Target condition according to guideline: | Actual condition according to the study: | Validity criteria met: |
| The vapour pressure should be determined for at least two temperatures. Three or more are preferred in the range 0 to 50 °C, in order to check the linearity of the vapour pressure curve. | The vapor presssure was determined for seven temperatures in the range of 20 to 50 °C. | Yes |
| A log p versus 1 /T curve should be stated. | The curve is presented in the study | Yes |
| An estimate of the vapour pressure at 20 or 25 °C should be stated. | Both are calculated and stated in the study. | Yes |
| The recommended measuring range for the gas saturation method is 10-4 to 10 Pa. | Measured vapour pressures were >10 Pa. However, measured values from three experiment replicates showed standard deviation of <2% (up to 45°C) and <11% (at 50°C) and a reasonable temperature dependence. Therefore, values determined for vapour pressure are considered valid. | No |
Description of key information
A study was performed to determine the vapour pressure of the test substance by a modified gas saturation method using a head space chromatographic apparatus in accordance with EC Testing Guideline A.4. The saturation experimetns were done in triplicate and the vapour pressure of the test substance was P20=30.5 Pa at 20 °C and P25=39.6 Pa at 25°C.
Key value for chemical safety assessment
- Vapour pressure:
- 30.5 Pa
- at the temperature of:
- 20 °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.
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