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EC number: 201-579-4 | CAS number: 85-00-7
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:
- 18 Feb 2017 to 22 Feb 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 23 Mar 2006
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 30 May 2000
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- The test substance has a vapour pressure of 6.2E-14 Pa at 25 °C and 1.6E-14 Pa at 20 °C.
- Executive summary:
The OECD TG 104 study in accordance with GLP was performed to determine the vapor pressure of the test substance. The vapor pressure of the test substance has been determined to be 6.2E-14 Pa at 25 °C and 1.6E-14 Pa at 20 °C.
Reference
RUN 1
The results for Run 1 are summarized in Table 1 in 'Any other information on results incl. tables'.
- Slope: -1.004E04
- Standard deviation in slope: 235.2
- Intercept: 20.51
- Standard deviation in intercept: 0.4830
- Coefficient of determination (r2): 0.9908
The results obtained indicate the following vapor pressure relationship: Log10 (Vp (Pa)) = -1.004E04/ temp(K) + 20.51
The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of -13.16*. The above yields a vapor pressure (Pa) at 293.15 K with a common logarithm of -13.74*.
RUN 2
The results for Run 2 are summarized in Table 1 in 'Any other information on results incl. tables'.
- Slope: -1.106E4
- Standard deviation in slope 290.3
- Intercept: 22.74
- Standard deviation in intercept: 0.5979
- Coefficient of determination (r2): 0.9904
The results obtained indicate the following vapor pressure relationship: Log10 (Vp (Pa)) = -1.106E4/ temp(K) + 22.74
This yields a vapor pressure (Pa) at 298.15 K with a common logarithm of -14.35*. This yields a vapor pressure (Pa) at 293.15 K with a common logarithm of -14.98*.
RUN 3
The results for Run 3 are summarized in Table 1 are shown in shown Table 3 in 'Any other information on results incl. tables'..
- Slope: -9.915E03
- Standard deviation in slope: 202.0
- Intercept: 20.47
- Standard deviation in intercept: 0.4164
- Coefficient of determination (r2): 0.9946
The results obtained indicate the following vapor pressure relationship: Log10 (Vp (Pa)) = -9.915E03 / temp(K) + 20.47
The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of -12.79*. The above yields a vapor pressure (Pa) at 293.15 K with a common logarithm of -13.35*
RUN 4
The results for Run 4 are summarized
- Slope: -9.762E03
- Standard deviation in slope: 185.7
- Intercept: 20.21
- Standard deviation in intercept: 0.3832
- Coefficient of determination (r2): 0.9957
The results obtained indicate the following vapor pressure relationship: Log10 (Vp (Pa)) = -9.762E03/temp(K) + 20.21
The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of -12.53*. The above yields a vapor pressure (Pa) at 293.15 K with a common logarithm of -13.09*.
* Calculated from an unrounded correlation equation for the relationship between log10 Vp (Pa) versus reciprocal temperature (1/T(K)).
Thermal analysis of the test substance by differential scanning calorimetry (DSC), including a cyclic heating /cooling /reheating program, indicated no thermal instability of the test substance when heating up to a temperature of 250 °C; which exceeds the maximum temperature used in this study.
Table 1: Summary of results
Run |
Log10 Vapor Pressure (Pa) at 25 ºC |
Log10 Vapor Pressure (Pa) at 20 ºC |
1 |
-13.16 |
-13.74 |
2 |
-14.35 |
-14.98 |
3 |
-12.79 |
-13.35 |
4 |
-12.53 |
-13.09 |
Mean |
-13.21 |
-13.79 |
Vapor Pressure (Pa) |
6.2 E-14 |
1.6E-14 |
Description of key information
6.2E-14 Pa at 25 °C and 1.6E-14 Pa at 20 °C, vapour pressure balance method, OECD TG 104, O'Connor 2017.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
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