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EC number: 219-547-3 | CAS number: 2459-10-1
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 hPa
- Remarks on result:
- other: extrapolated
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 hPa
- Remarks on result:
- other: extrapolated
- Temp.:
- 50 °C
- Vapour pressure:
- 0.001 hPa
- Remarks on result:
- other: intrapolated
- Key result
- Vapour pressure:
- 0.001 hPa
- Remarks on result:
- other: intrapolated
- Conclusions:
- The vapour pressure of trimethyl benzene-1,2,4-tricarboxylate was estimated to be, by extrapolation at 25 deg C of experimental results: VP = 3.3E-5 hPa, equivalent to 2.48E-5 mmHg
- Executive summary:
The vapour pressure of trimethyl benzene-1,2,4-tricarboxylate was estimated to be, by extrapolation at 25 deg C of experimental results: VP = 3.3E-5 hPa, equivalent to 2.48E-5 mmHg
Reference
Results
| Temperature [°C] | Vapour pressure curve [p/hPa] | |
| Cell 13 | Cell 15 | |
| 53.5 | 1.07e-03 | 1.20e-03 |
| 53.4 | 1.01e-03 | 1.08e-03 |
| 41.7 | 3.69e-04* | 3.85e-04* |
| 41.6 | 2.19e-04 | 2.38e-04 |
| 41.6 | 2.97e-04 | 2.94e-04 |
| 30.8 | 6.59e-05 | 8.37e-05 |
*Values are not used for calculation of regression curve#
In the temperature range used for vapor pressure measurements the test item was liquid. Vapor pressures were calculated using a molar mass of 252.2 g/mol. The regression of the vapor pressure data leads with a mean deviation of 9.57% to the following equation:
ln (p/hPa) = 29.6507- 11916.42 / (273.15+t/°C)
The vapor pressures of the following table were calculated from the regression equation.
| Temperature [°C] | Vapour pressure [hPa] |
| 20 | 1.7e-05 |
| 25 | 3.3 -05 |
| 50 | 7.3e-04 |
Description of key information
Vapour pressure: 3.3E-5 hPa at 25 deg C.
Key value for chemical safety assessment
- Vapour pressure:
- 0 hPa
- at the temperature of:
- 25 °C
Additional information
The vapour pressure of trimethyl benzene-1,2,4-tricarboxylate was estimated to be, by extrapolation at 25 deg C of experimental results: VP = 3.3E-5 hPa, equivalent to 2.48E-5 mmHg
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