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EC number: 226-122-6 | CAS number: 5285-60-9
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 10 April 2018 to 20 June 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- other: for detailed info on composition
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 2016
- 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:
- 0 Pa
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- The vapour pressure of the substance at 20°C and 25°C was determined to be 8.5E-7 Pa and 2.1E-6 Pa, resp.
- Executive summary:
The vapour pressure of the substance was determined using the isothermal thermogravimetric effusion method in a GLP study based on EC A.4, OECD 104 and OPPTS 830.7950. Validation of the method was performed using a set of five reference substances. The vapour pressure regression curve (log PT as function of 1/T; with T in K) of the substance was constructed from weight losses measured at 140°C, 150°C, 160°C and 170°C. The vapour pressure of the substance at 20°C and 25°C was calculated (extrapolation) of the vapour pressure curve to be 8.5E-7 Pa and 2.1E-6 Pa, resp.
Reference
Table: Results of the isothermal TGA analysis (test item)
Temperature |
Weight loss |
νT |
log νT |
log PT |
PT |
140 |
2.50873 |
2.99E-4 |
-3.52 |
0.63 |
4.2 |
|
2.43631 |
2.91E-4 |
-3.54 |
0.61 |
4.1 |
150 |
4.88613 |
5.83E-4 |
-3.23 |
1.00 |
9.9 |
|
5.27474 |
6.30E-4 |
-3.20 |
1.04 |
11 |
160 |
10.0272 |
1.20E-3 |
-2.92 |
1.40 |
25 |
|
10.0367 |
1.20E-3 |
-2.92 |
1.40 |
25 |
170 |
18.8507 |
2.25E-3 |
-2.65 |
1.75 |
56 |
|
17.1896 |
2.05E-3 |
-2.69 |
1.70 |
50 |
Description of key information
Vapour pressure at 25°C: 2.1E-6 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
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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