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EC number: 946-682-1 | 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:
- 2018-12-03 to 2019-03-28
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- The study was conducted according to an internationally recognised method, and under GLP. The substance is considered to be adequately characterised. Therefore full validation applies.
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Principles of method if other than guideline:
- Not applicable
- GLP compliance:
- yes
- Type of method:
- effusion method: isothermal thermogravimetry
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- Vapour pressure of test item was measured according to OECD 104 guideline using the thermogravimetric method.
The vapour pressure of test item was calculated as 1.97E-4 Pa at 20°C (extrapolation from linear regression). - Executive summary:
Vapour pressure of test item was measured according to OECD 104 guideline using the thermogravimetric method.
The vapour pressure of test item was calculated as 1.97E-4 Pa at 20°C (extrapolation from linear regression).
Reference
Table: Test item vapour pressure test results
T (K) |
Δm (mg) |
Duration time (min) |
t (h) |
Sample coated area F (cm2) |
Evaporation rate VT (g.cm-2.h-1) |
Log VT |
Log PT |
Vapour pressure PT (Pa) |
1/T |
397 |
0.2074 |
100 |
1.667 |
0.332 |
3.75E-4 |
-3.426 |
0.811 |
6.467 |
2.52E-3 |
401 |
0.2667 |
100 |
1.667 |
0.332 |
4.82E-4 |
-3.317 |
0.919 |
8.291 |
2.49E-3 |
405 |
0.3611 |
100 |
1.667 |
0.332 |
6.53E-4 |
-3.185 |
1.049 |
11.19 |
2.47E-3 |
409 |
0.4827 |
100 |
1.667 |
0.332 |
8.73E-4 |
-3.059 |
1.173 |
14.9 |
2.44E-3 |
413 |
0.6353 |
100 |
1.667 |
0.332 |
1.15E-3 |
-2.940 |
1.291 |
19.55 |
2.42E-3 |
417 |
0.8479 |
100 |
1.667 |
0.332 |
1.53E-3 |
-2.814 |
1.415 |
26.00 |
2.40E-3 |
The linear regression of logPT=f(1/T) of test item |
LogPT=-5040.8269/T+13.4984 (R2=0.9992) |
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PT (20.0°C) |
1.97E-4 Pa |
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Description of key information
The vapour pressure of test item was calculated as 1.97E-4 Pa et 20°C (extrapolation from linear regression) using the thermogravimetric method.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
A data measuring according to OECD 104 guideline and under GLP is available.
It is considered as a key study, and the result is retained as key data.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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