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EC number: 202-607-8 | CAS number: 97-77-8
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 Jan – 07 Feb 2022
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Test no.:
- #1
- Temp.:
- ca. 25 °C
- Vapour pressure:
- ca. 0 Pa
- Remarks on result:
- other: estimated from vapour pressure curve
- Endpoint:
- vapour pressure
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- supporting study
- Study period:
- 6 September 2005- 19 October 2005
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: GLP-Guideline study for surrogate substance
- Qualifier:
- according to guideline
- Guideline:
- other: Method A4 specified in Commission Directive 92/69/EEC (which constitutes Annex V of Council Directive 67/548/EEC)
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- The Department of Health of the Government of The United Kingdom
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Endpoint:
- vapour pressure
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Data from handbook or collection of data
- Qualifier:
- no guideline required
- Temp.:
- 25 °C
- Vapour pressure:
- 0.001 mm Hg
- Remarks on result:
- other: Estimated value
Referenceopen allclose all
Summary of results from plot of log10Vp versus 1/T
| Run 1 | Run 2 | |
| Correlation: | -0.99029 | -0.95000 |
| Slope: | -3654.6 | -2877.3 |
| Intercept: | 8.6346 | 6.1235 |
| Log Vp at 25°C: | -3.62 | 3.53 |
| Vp (Pa) at 25°C: | 2.38 x 10-4 | 2.97 x 10-4 |
Summary of Results
Run Log10 [Vp(25°C)]
1 -4.560
2 -5.080
3 -4.505
4 -4.322
5 -4.988
Mean -4.691
VapourPressure 2.0 x 10-5Pa
Description of key information
0.00027 Pa at 25°C
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
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