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EC number: 219-350-2 | CAS number: 2422-88-0
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- from 09 June 2017 to 25 July 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- 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
Test material
- Reference substance name:
- Tributyl-2-thiourea
- EC Number:
- 219-350-2
- EC Name:
- Tributyl-2-thiourea
- Cas Number:
- 2422-88-0
- Molecular formula:
- C13H28N2S
- IUPAC Name:
- 1,1,3-tributylthiourea
- Test material form:
- liquid
- Details on test material:
- - Name of test material (as cited in study report): Tri butyl thiourea
- Appearance: Clear pale to medium brown liquid
- Storage conditions: At room temperature
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.001 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.003 Pa
Any other information on results incl. tables
Table: Results of the isothermal TGA analysis (test item)
Temperature |
Weight loss |
vT [g/cm2/h] |
log vT |
log PT |
PT |
70 |
2.63131 |
3.14 E-4 |
-3.50 |
0.57 |
3.7 |
|
2.14033 |
2.55 E-4 |
-3.59 |
0.46 |
2.9 |
80 |
7.74248 |
9.24 E-4 |
-3.03 |
1.16 |
14 |
|
6.64079 |
7.93 E-4 |
-3.10 |
1.08 |
12 |
90 |
20.8089 |
2.48 E-3 |
-2.60 |
1.70 |
50 |
|
17.5099 |
2.09 E-3 |
-2.68 |
1.61 |
40 |
100 |
49.2597 |
5.88 E-3 |
-2.23 |
2.17 |
1.5 E2 |
|
39.4479 |
4.71 E-3 |
-2.33 |
2.05 |
1.1 E2 |
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of the substance at 20°C was determined to be 1.4E-3 Pa.
The vapour pressure of the substance at 25°C was determined to be 3.4E-3 Pa. - 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 duplicate measurements at 70°C, 80°C, 90°C and 100°C. The vapour pressure of the substance at 20°C and 25°C was determined by extrapolation to be 1.4E-3 and 3.4E-3 Pa, resp.
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