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EC number: 610-565-0 | CAS number: 50717-99-2
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 30 January 2018 - 31 October 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
Materials and methods
Test guidelineopen allclose all
- 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
Test material
- Reference substance name:
- [(8R,9S,10R,13S,14S,17R)-3-ethoxy-17-ethynyl-13-methyl-2,7,8,9,10,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-17-yl] acetate
- EC Number:
- 610-565-0
- Cas Number:
- 50717-99-2
- Molecular formula:
- C24H32O3
- IUPAC Name:
- [(8R,9S,10R,13S,14S,17R)-3-ethoxy-17-ethynyl-13-methyl-2,7,8,9,10,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-17-yl] acetate
- Test material form:
- solid: particulate/powder
- Details on test material:
- Physical appearance: off-white powder
Storage conditions: at room temperature
Constituent 1
- Specific details on test material used for the study:
- Decomposition temp.: > 250°C
Results and discussion
Vapour pressureopen allclose all
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
Any other information on results incl. tables
Results of the Vapour pressure Isothermal TGA Analysis
Temperature |
Weight loss |
νT |
logνT |
logPT |
PT |
150 |
3.43464 |
4.10x10-4 |
-3.39 |
0.80 |
6.3 |
|
3.32750 |
3.97x10-4 |
-3.40 |
0.78 |
6.1 |
160 |
5.96938 |
7.13x10-4 |
-3.15 |
1.11 |
13 |
|
5.99323 |
7.15x10-4 |
-3.15 |
1.11 |
13 |
170 |
11.0815 |
1.32x10-3 |
-2.88 |
1.45 |
28 |
|
11.0465 |
1.32x10-3 |
-2.88 |
1.45 |
28 |
180 |
19.7840 |
2.36x10-3 |
-2.63 |
1.77 |
60 |
|
19.8629 |
2.37x10-3 |
-2.63 |
1.78 |
60 |
Vapour Pressure of the Test Item
Temperature |
logPT |
PT |
PT |
20 |
-5.83 |
1.5 x 10-6 |
1.1 x 10-8 |
25 |
-5.47 |
3.4 x 10-6 |
2.5 x 10-8 |
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of the substance at 20°C and 25°C was determined to be 1.5E-6 Pa and 3.4E-6 Pa, resp.
- Executive summary:
The vapour pressure of the substance was determined using the isothermal thermogravimetric effusion method in a GLP study according to EC A.4, OECD 104 and OPPTS 830.7950.
A vapour pressure curve was constructed from 5 reference substances. The vapour pressure of the substance at 20°C and 25°C was concluded to be 1.5E-6 Pa and 3.4E-6 Pa, resp.
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