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EC number: 203-841-3 | CAS number: 111-17-1
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:
- 17.11.2003-20.11.2003
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- gas saturation method
- Temp.:
- ca. 25 °C
- Vapour pressure:
- ca. 0 hPa
- Remarks on result:
- other: extrapolated value
- Transition / decomposition:
- no
- Conclusions:
- The vapour pressure was determined to be 4.4E-03 Pa at 25°C (OECD TG 104, gas saturation method).
Reference
Vapour pressure at 25 °C is an extrapolated value: 4.44×10-3. The following regression expression was used:
logP(Pa)=-6187.51×1/T+18.4004
Measured values are presented in the table:
Measurement temperature (°C) |
Flow Volume (mL/min) |
Vapour pressure (Pa) |
|
Measurement values |
average |
||
40 |
20 |
4.68·10-2 |
4.41·10-2 |
30 |
4.51·10-2 |
||
40 |
4.05·10-2 |
||
45 |
20 |
8.94·10-2 |
8.85·10-2 |
30 |
8.80·10-2 |
||
40 |
8.82·10-2 |
||
50 |
20 |
1.87·10-1 |
1.80·10-1 |
30 |
1.83·10-1 |
||
40 |
1.71·10-1 |
||
The test results were similar even when the flow volume was changed and measured (repeat accuracy 30% or less), so the carrier gas was deemed to be saturated with the test material.
Description of key information
The vapour pressure was determined to be 4.4E-03 Pa at 25°C (OECD TG 104, gas saturation method).
Key value for chemical safety assessment
- Vapour pressure:
- 0.004 Pa
- at the temperature of:
- 25 °C
Additional information
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