Registration Dossier
Registration Dossier
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EC number: 432-550-6 | CAS number: 243858-01-7
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 June 15, 1999 to June 17, 1999
- 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
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 25 °C
- Vapour pressure:
- < 0 hPa
- Remarks on result:
- other: The vapour pressure value for 25°C was below the lower measuring limit.
- Conclusions:
- Under the conditions of the test, the vapour pressure of the test substance was below the lower measuring limit of the vapour pressure balance at the temperature of up to 148.5°C. The vapour pressure value for 25°C was below 0.00001 hPa (lower measuring limit).
- Executive summary:
A study was conducted to determine the vapour pressure of the test substance according to the EU Method A.4, in compliance with GLP. The determination of vapor pressure was carried out according to the effusion method (vapour pressure balance).
No increase in weight and therefore no vapour pressure of the test substance were registered with the balance in the temperature range 21-148.5°C. Differential Scanning Calorimetry was also performed. The measurement in a closed glass pan did not show any endothermic effect prior an exothermal effect in the range 140-205°C, with energy of 42 J/g. At 215°C, an exothermal decomposition was observed in the range 215-320°C, with decomposition energy of 265 J/g.
Under the conditions of the test, the vapour pressure of the test substance was below the lower measuring limit of the vapour pressure balance at the temperature of up to 148.5°C. The vapour pressure value for 25°C was below 0.00001 hPa (lower measuring limit).
Reference
No increase in weight and therefore no vapour pressure of the test substance was registered in the temperature range of 21 to 148.5°C. Hence, the vapour pressure of the test substance was below the lower measuring limit of the vapour pressure balance at the temperature of up to 148.5°C.
The vapour pressure value for 25°C was below 1 x 10-5 hPa (lower measuring limit).
As a precaution, a Differential Scanning Calorimetry was also performed. The measurement in a closed glass pan did not show any endothermic effect prior to an exothermal effect in the range 140-205°C, with energy of 42 J/g. At 215°C, an exothermal decomposition was observed in the range 215-320°C, with decomposition energy of 265J/g.
Description of key information
The vapour pressure value for the test substance at 25°C was below 0.00001 hPa (lower measuring limit) (Smeykal, 1999)
Key value for chemical safety assessment
- Vapour pressure:
- 0 hPa
- at the temperature of:
- 25 °C
Additional information
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