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EC number: 947-320-5 | 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:
- Not specified
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- GLP compliance:
- not specified
- Type of method:
- static method
- Key result
- Temp.:
- 75 °C
- Vapour pressure:
- 17 hPa
- Key result
- Temp.:
- 100 °C
- Vapour pressure:
- 52 hPa
- Key result
- Temp.:
- 133 °C
- Vapour pressure:
- 173 hPa
- Key result
- Temp.:
- 150 °C
- Vapour pressure:
- 236 hPa
- Key result
- Temp.:
- 175 °C
- Vapour pressure:
- 287 hPa
- Key result
- Temp.:
- 200 °C
- Vapour pressure:
- 298 hPa
- Conclusions:
- Under the conditions of this study the vapour pressure of the test material was 17 hPa at 75 °C.
- Executive summary:
The vapour pressure of the test material was investigated using the static method according to EU Method A4.
The sample was a solid which had to be ground to enable it to be charged to the test cell. The test cell was installed into the vessel before applying vacuum to remove the air. The sample was heated at a rate of 5 K.min^-1 with stirring and pressure readings taken at 25 °C hold intervals to 200 °C.
The values below 75 °C have not been quoted, as representative temperature measurements could not be guaranteed due to the sample being solid. A melting point for the sample was not known but a softening point of 110 °C was given. Corrections have been made for any residual pad gas remaining in the sample container at the start of the experiment.
Under the conditions of this study the vapour pressure of the test material was reported as follows:
At 75 °C: 17 hPa
At 100 °C: 52 hPa
At 133 °C: 173 hPa
At 150 °C: 236 hPa
At 175 °C: 287 hPa
At 200 °C: 298 hPa
Reference
- The sample was a solid which had to be ground to enable it to be charged to the test cell.
- The test cell was installed into the vessel before applying vacuum to remove the air. The sample was heated at a rate of 5 K.min^-1 with stirring and pressure readings taken at 25 °C hold intervals to 200 °C.
- The values below 75 °C have not been quoted, as representative temperature measurements could not be guaranteed due to the sample being solid. A melting point for the sample was not known but a softening point of 110 °C was given.
- Corrections have been made for any residual pad gas remaining in the sample container at the start of the experiment.
Description of key information
Under the conditions of this study the vapour pressure of the test material was 17 hPa at 75 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 17 hPa
- at the temperature of:
- 75 °C
Additional information
The vapour pressure of the test material was investigated using the static method according to EU Method A4. The study was awarded a reliability score of 2 in accordance with the criteria set forth by Klimisch et al. (1997).
The sample was a solid which had to be ground to enable it to be charged to the test cell. The test cell was installed into the vessel before applying vacuum to remove the air. The sample was heated at a rate of 5 K.min^-1 with stirring and pressure readings taken at 25 °C hold intervals to 200 °C.
The values below 75 °C have not been quoted, as representative temperature measurements could not be guaranteed due to the sample being solid. A melting point for the sample was not known but a softening point of 110 °C was given. Corrections have been made for any residual pad gas remaining in the sample container at the start of the experiment.
Under the conditions of this study the vapour pressure of the test material was reported as follows:
At 75 °C: 17 hPa
At 100°C: 52 hPa
At 133°C: 173 hPa
At 150°C: 236 hPa
At 175°C: 287 hPa
At 200°C: 298 hPa
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