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EC number: 260-280-7 | CAS number: 56602-77-8
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:
- 24 October 1995 to 08 January 1996
- 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
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- static method
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- 16 Pa
- Key result
- Test no.:
- #2
- Temp.:
- 25 °C
- Vapour pressure:
- 21 Pa
- Conclusions:
- The vapour pressure of the test material was determined to be 21 Pa at 25 °C.
- Executive summary:
The vapour pressure of the test material was investigated in a study which was conducted under GLP conditions and in accordance with the standardised guidelines OECD 104 and EU Method A.4 following the static method.
The extrapolated vapour pressures were found to be 16 Pa at 20 °C and 21 Pa at 25 °C.
Reference
Determination of the vapour pressure by the static method
Temperature K |
1/K |
Vapour Pressure (Pa) |
Mean Vapour Pressure (Pa) |
Log10VP |
|
Run 1 |
Run 2 |
||||
303 |
3.30 x 10^-3 |
25 |
30 |
27.5 |
1.439 |
313 |
3.19 x 10^-3 |
35 |
40 |
37.5 |
1.574 |
323 |
3.10 x 10^-3 |
60 |
70 |
65 |
1.813 |
333 |
3.00 x 10^-3 |
75 |
120 |
97.5 |
1.989 |
343 |
2.92 x 10^-3 |
135 |
145 |
140 |
2.146 |
Linear regression: Log10VP = 7.68 – 1900/K
r = 0.9963
The extrapolated vapour pressures were found to be 16 Pa at 20 °C and 21 Pa at 25 °C.
Description of key information
The vapour pressure of the substance is 21 Pa at 25 °C, OECD 104, EU Method A.4, HLS (1996).
Key value for chemical safety assessment
- Vapour pressure:
- 21 Pa
- at the temperature of:
- 25 °C
Additional information
The vapour pressure of the test material was investigated in a study which was conducted under GLP conditions and in accordance with the standardised guidelines OECD 104 and EU Method A.4 following the static method.
The extrapolated vapour pressures were found to be 16 Pa at 20 °C and 21 Pa at 25 °C.
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