Registration Dossier
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EC number: 443-090-0 | 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:
- From September 28, 2001 to October 05, 2001
- 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
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 25 °C
- Vapour pressure:
- < 0.001 Pa
- Temp.:
- 20 °C
- Vapour pressure:
- < 0.001 Pa
- Temp.:
- 50 °C
- Vapour pressure:
- < 0.001 Pa
- Transition / decomposition:
- yes
- Transition temp.:
- > 116 °C
- Conclusions:
- Under the study conditions, the vapour pressure of the test substance at 25°C was determined to be far below 0.001 Pa.
- Executive summary:
A study was conducted to determine the vapour pressure of the test substance according to EU Method A.4 in compliance with GLP.
The determination of vapor pressure was carried out within the temperature range of 29 to 129°C according to the effusion method (vapour pressure balance).
No vapour pressure could be determined in the range of 29 to 110°C, which indicates that the vapour pressure in this range was <10E-5 hPa. Above 116°C, the vapour pressure values displayed an unusual scatter varying from 1.0x10E-5 to 2.0x10E-5 due to the volatile decomposition products of the test substance.
Under the study conditions, the vapour pressure of the test substance at 25°C was determined to be far below 0.001 Pa.
Reference
The vapour pressure was measured in the temperature range of 29 to 129°C. No signal was observed in the range 29 to 110°C, this means the vapour pressure in this range was below 10E-5 hPa. Above 116°C vapour pressure was measured. The data of the vapour pressure measurement show an unusual scatter varying in the range 1.0x10E-5 to 2.0x10E-5. It has to be concluded, that the measured vapour pressure is caused by the release of volatile decomposition products. This correlates with the decomposition of the test substance observed in the analysis of the DSC (melting point) measurement. Based on these considerations it can be clearly stated that the vapour pressure at 20, 25 and 50°C is far below 10E-5 hPa.
Description of key information
Under the study conditions, the vapour pressure of the test substance at 25°C was determined to be far below 0.001 Pa.
Key value for chemical safety assessment
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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