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EC number: 246-438-8 | CAS number: 24731-73-5
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2006-09-13 to 2006-09-25
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Recent, well documented GLP and guideline study.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 006
- Report date:
- 2006
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
Test material
- Reference substance name:
- N,N'-1,4-phenylenebis[3-oxobutyramide]
- EC Number:
- 246-438-8
- EC Name:
- N,N'-1,4-phenylenebis[3-oxobutyramide]
- Cas Number:
- 24731-73-5
- Molecular formula:
- C14H16N2O4
- IUPAC Name:
- 3-oxo-N-[4-(3-oxobutanamido)phenyl]butanamide
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Temp.:
- 50 °C
- Vapour pressure:
- 0 Pa
Any other information on results incl. tables
Individual Results
ThermalStability
The DSC-measurement in a closed glass crucible with the test item showed an endothermic effect(melting) in the temperature range 150 — 200 °C directly followed by an exothermal effect in thetemperature range 200 — 265 °C.
Vapour Pressure Balance (Effusion Method)
The vapour pressure was measured in the temperature range of 29 °C to 157 °C. Above 123 °C avapour pressure could be measured. The measured vapour pressures at the correspondingtemperatures are listed in the following table:
Temperature / °C |
Vapour pressure / hPa |
123.5 |
1.9 x 10-5 |
129.9 |
2.4 x 10-5 |
138.2 |
4.9 x 10-5 |
142.1 |
6.9 x 10-5 |
147.2 |
1.3 x 10-4 |
153.6 |
2.5 x 10-4 |
157.0 |
3.6 x 10 -4 |
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of N,N'-1,4-phenylenebis(3-oxobutanamide) determined according to OECD 104 is 1.6 x 10(-9) Pa at 20°C
- Executive summary:
Vapour Pressure
The calculated vapour pressure values are extrapolated:
T / °C
p/hPa
p / Pa
20
1.6 x 10 -11
1.6 x 10-9
25
3.9 x 10-11
3.9 x 10-9
50
2.1 x 10-9
2.1 x 10-7
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