Registration Dossier
Registration Dossier
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EC number: 939-185-6 | 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:
- 23 September - 16 November 2016
- 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
- Type of method:
- effusion method: Knudsen cell
- Specific details on test material used for the study:
- - Analytical purity: 94.55 %
- Expiration date: 31 December 2017
- Storage condition: at room temperature - Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: The vapour pressure of the test item is given as the mean value of two measurements.
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: The vapour pressure of the test item is given as the mean value of two measurements.
- Conclusions:
- The vapour pressure of the test substance was determined to be 1.2E-8 Pa at 20.0°C and 2.2E-8 Pa at 25.0°C.
Reference
The test was started at 53°C, the initial high weight losses were probably attributable to residual water as the weight losses became too low to be measured on the third test. A similar pattern emerged at the 110°C with the weight losses decreasing. These weight losses were probably attributable to impurities from the manufacturing process. The vapour pressure was therefore determined from the final measurement at 110°C to 144°C, the actual value at 144°C was excluded because the vapour pressure was lower than that at 143°C, a subsequent measurement at 127°C confirmed that it was appropriate to exclude the measurement at 144°C.
The contents of the crucibles were examined and analysed by IR. The native material was a brown free flowing liquid, the contents of the control was the same, but the tested material was a dark brown tar like liquid. There were also differences in the IR suggesting that the residual impurities were masking some of the functional groups and that the test had either purified or degraded the material.
Description of key information
Based on a GLP study (K1, Foster, 2016) according to the EU method A.4 and OECD guideline 104, the vapour pressure of the test substance at 20°C and 25°C equals 1.2 E-08 Pa and 2.2 E-08 respectively.
Key value for chemical safety assessment
- Vapour pressure:
- 0 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.
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.
