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EC number: 475-290-9 | CAS number: 39537-23-0
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:
- 1994-03-09 to 1994-03-10
- 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
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 hPa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 hPa
- Key result
- Temp.:
- 50 °C
- Vapour pressure:
- 0 hPa
- Conclusions:
- Vapour pressure values of 1.2E-7 hPa, 2.2E-7 hPa and 3.5E-6 hPa have been estimated at 20 °C, 25 °C and 50 °C according to EU Method A.4 (effusion method: vapour pressure balance).
Reference
Nine measurements were performed in the range 90.2 °C to 118.7 °C, with a vapour pressure ranging from 1.39E-4 to 1.37E-3.
For lower temperatures, the vapour pressure was calculated using the following equation:
log P [hPa] = A + B/(C+T [°C])
A = 8.913612
B = -4643.752
C = 273.15
Description of key information
Vapour pressure: 1.2E-7 hPa at 20 °C, 2.2E-7 hPa at 25 °C and 3.5E-6 hPa at 50 °C (EU Method A.4, effusion method: vapour pressure balance)
Key value for chemical safety assessment
- Vapour pressure:
- 0 hPa
- at the temperature of:
- 20 °C
Additional information
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