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EC number: 807-380-4 | CAS number: 377734-55-9
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Experimental period was 27 November 2017 to 29 November 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Deviations:
- no
- Type of method:
- effusion method: isothermal thermogravimetry
Test material
- Reference substance name:
- 7-hydroxy-N,N,N-trimethylnaphthalen-2-aminium methyl sulfate
- Cas Number:
- 377734-55-9
- Molecular formula:
- C14H19NO5S
- IUPAC Name:
- 7-hydroxy-N,N,N-trimethylnaphthalen-2-aminium methyl sulfate
- Test material form:
- solid: particulate/powder
Constituent 1
- Specific details on test material used for the study:
- Batch: 16-09-01 (taken from label)
Purity/Composition: 100%
Test item storage: At room temperature
Stable under storage conditions until: 05 September 2019 (expiry date)
Results and discussion
Vapour pressureopen allclose all
- Key result
- Test no.:
- #1
- Temp.:
- ca. 20 °C
- Vapour pressure:
- < 8.4 other: x10-7 Pa
- Key result
- Test no.:
- #2
- Temp.:
- ca. 25 °C
- Vapour pressure:
- < 6.6 other: x10-7 Pa
Any other information on results incl. tables
A log pversus1/T curve for the test itemin the range of 170°C and 200°C could not be determined. The coefficient of correlation (r) was < 0.99 (data is archived in the raw data).
The weight losses were compared with the results of chrysene at the same temperatures. During both analyses the weight loss of the test item at 160°C and 170°C were lower than the weight loss of the reference substance at the same temperatures. According to this the vapour pressure of the test item was determined to be lower than that ofchrysene.
|
20°C |
25°C |
||
|
[Pa] |
[mm Hg] |
[Pa] |
[mm Hg] |
Test item |
< 8.4x10 -7 |
< 6.3x10 -9 |
< 6.6x10-7 |
< 4.9x10-9 |
Applicant's summary and conclusion
- Conclusions:
- The isothermal TGA effusion method was applied for the determination of the vapour pressure of NBTRI.
The vapour pressure of the test item at 20°C (293K) and 25°C (298K) was:
< 8.4 x 10-7 Pa 20°C (293K)
< 6.6 x 10-7 Pa 25°C (298K) - Executive summary:
The isothermal TGA effusion method was applied for the determination of the vapour pressure of NBTRI.
The vapour pressure of the test item at 20°C (293K) and 25°C (298K) was:
20°C
25°C
[Pa]
[mm Hg]
[Pa]
[mm Hg]
Test item
< 8.4x10-7
< 6.3x10-9
< 6.6x10-7
< 4.9x10-9
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