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EC number: 946-382-0 | CAS number: -
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:
- From 01 July 2015 to 26 July 2016.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 2009
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 2006
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Version / remarks:
- 1996
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- effusion method: isothermal thermogravimetry
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 2.3 other: E-07 Pa
- Temp.:
- 20 °C
- Vapour pressure:
- 1 other: E-07 Pa
- Conclusions:
- The vapour pressure of the substance PEMP product at 25°C was determined to be 2.3E-07 Pa.
- Executive summary:
The vapour pressure was determined using the isothermal thermogravimetric effusion method in a GLP study according to EC A.4, OECD 104 and OPPTS 830.7950. The vapour pressure of PEMP product at 25°C was determined to be 2.3E-07 Pa. The vapour pressure at 20°C was determined to be 1.0E-07 Pa.
Reference
Table: Results of the isothermal TGA analysis (test substance)
Experiment |
Temperature [°C] |
Weight loss [µg/min] |
νT [g/cm2/h] |
logνT |
logPT |
PT [Pa] |
|
|
|
|
|
|
|
1 |
200 |
4.620 |
5.51E-04 |
-3.26 |
0.84 |
6.9 |
|
210 |
7.839 |
9.36E-04 |
-3.03 |
1.11 |
13 |
|
220 |
13.12 |
1.57E-03 |
-2.81 |
1.37 |
23 |
|
230 |
21.19 |
2.53E-03 |
-2.60 |
1.61 |
41 |
|
|
|
|
|
|
|
2 (1) |
200 |
3.734 |
4.46E-04 |
-3.35 |
0.73 |
5.3 |
|
210 |
8.444 |
1.01E-03 |
-3.00 |
1.14 |
14 |
|
220 |
15.72 |
1.88E-03 |
-2.73 |
1.46 |
29 |
|
230 |
25.41 |
3.03E-03 |
-2.52 |
1.70 |
51 |
|
|
|
|
|
|
|
3 |
200 |
4.835 |
5.77E-04 |
-3.24 |
0.86 |
7.2 |
|
210 |
7.817 |
9.33E-04 |
-3.03 |
1.10 |
13 |
|
220 |
12.64 |
1.51E-03 |
-2.82 |
1.35 |
22 |
|
230 |
20.92 |
2.50E-03 |
-2.60 |
1.61 |
40 |
|
|
|
|
|
|
|
(1) The vapour pressure regression curve constructed using the data of Experiment 1 and Experiment 2 had a coefficient of correlation of <0.99. Therefore, it was decided to perform a third experiment and to calculate the coefficient of correlation for the Experiment 1/Experiment 3 and Experiment 2/Experiment 3. Coefficient of correlation was >0.99 for the Experiment 1/Experiment 3. Based on this, the results from Experiment 2 were excluded.
Description of key information
Vapour pressure at 25°C: 2.3E-07 Pa (EC A.4, OECD 104, OPPTS 830.7950: isothermal thermogravimetric effusion)
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
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