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EC number: 700-146-1 | CAS number: 1141487-54-8
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:
- 2010-08-31 to 2010-10-21
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- , 2006
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- , 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- , signed 2009-10-29
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 20 °C
- Vapour pressure:
- 0.14 Pa
- Remarks on result:
- other: extrapolated value
- Key result
- Temp.:
- 22.5 °C
- Vapour pressure:
- 0.22 Pa
- Remarks on result:
- other: measured value
- Temp.:
- 25 °C
- Vapour pressure:
- 0.28 Pa
- Remarks on result:
- other: extrapolated value
- Temp.:
- 50 °C
- Vapour pressure:
- 6.8 Pa
- Remarks on result:
- other: extrapolated value
- Conclusions:
- According to OECD Guideline 104 (1995) and EU Method A.4 (2008), the vapour pressure of the test substance at 22.5°C was measured at 0.22 Pa, the value at 20°C is extrapolated to 0.14 Pa.
Reference
The vapour pressure was measured in the temperature range of 12 °C to 50 °C. Above 15 °C a vapour pressure could be measured. The measured vapour pressures at the corresponding temperatures are listed in the following table:
Temperature / °C | Vapour pressure / hPa |
15.3 | 5.4 × 10-4 |
17.8 | 1.2 × 10-3 |
22.5 | 2.2 × 10-3 |
26.0 | 3.6 × 10-3 |
30.8 | 6.5 × 10-3 |
35.9 | 1.2 × 10-2 |
40.4 | 2.1 × 10-2 |
45.1 | 3.7 × 10-2 |
49.4 | 6.0 × 10-2 |
The values for 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C :
log (p/hPa) = A + B/(C+T[°C])
A = 15,23659
B = -5302,10
C = 273,15
T / °C | p / hPa | p / Pa |
12* | 4.4× 10-4 | 4.4× 10-2 |
20 | 1.4× 10-3 | 1.4× 10-1 |
22.5 | 2.2× 10-3 | 2.2× 10-1 |
25 | 2.8× 10-3 | 2.8× 10-1 |
50 | 6.8× 10-2 | 6.8× 10-0 |
*Calculated by submitter using the Antoine equation as described above (at 12°C; standard environmental parameter of Table R.16-8. In ECHA guidance on IR & CSA Chapter R.16: Environmental exposure assessment).
Description of key information
The vapour pressure of the substance at 22.5°C was measured at 0.22 Pa, the value at 20°C is extrapolated to 0.14 Pa.
Key value for chemical safety assessment
- Vapour pressure:
- 0.22 Pa
- at the temperature of:
- 22.5 °C
Additional information
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