Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 020
- Report date:
- 2020
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- GLP compliance:
- no
- Type of method:
- effusion method: Knudsen cell
Test material
- Reference substance name:
- L-Tyrosine, N-acetyl-3,5-dinitro-, etyhl ester
- Cas Number:
- 29358-99-4
- Molecular formula:
- C13H15N3O8
- IUPAC Name:
- L-Tyrosine, N-acetyl-3,5-dinitro-, etyhl ester
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Key result
- Test no.:
- #1
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Key result
- Test no.:
- #2
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
Applicant's summary and conclusion
- Conclusions:
- For the test substance L-Tyrosine, N-acetyl-3,5-dinitro-, ethyl ester, the following vapour pressures at 20 °C and at 25 °C were calculated from the regression equation:
Vapour pressure at 25 °C: 3.99 * 10-08 Pa
Vapour pressure at 20 °C: 1.02 * 10-07 Pa - Executive summary:
The following vapour pressures were determined experimentally and considered as valid (mean and standard deviation given):
Table 5-a Experimentally Determined Vapour Pressures
T
T
P
Stand. Dev. P
RSD P
°C
K
Pa
Pa
%
90.0
363.2
1.80E-03
4.92E-04
27.3%
105.0
378.2
1.33E-02
2.04E-03
15.4%
120.0
393.2
6.08E-02
1.57E-02
25.8%
135.0
408.2
2.73E-01
6.69E-02
24.5%
In this table, E-0X represents * 10-X.
For the test substance L-Tyrosine, N-acetyl-3,5-dinitro-, ethyl ester, the following vapour pressures at 20 °C and at 25 °C were calculated from the regression equation:
Vapour pressure at 25 °C: 3.99 * 10-08 Pa
Vapour pressure at 20 °C: 1.02 * 10-07 Pa
The linear regression of log p vs. 1/T gave a correlation coefficient r of - 0.9991, showing good repeatability and precision. Therefore, the determination is considered as valid.
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