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EC number: 202-267-0 | CAS number: 93-68-5
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2009-07-31-2010-04-15
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study was performed in accordance with the OECD Guideline 104, and EU Method A.4.
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
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
- Principles of method if other than guideline:
- Not applicable.
- GLP compliance:
- no
- Remarks:
- Not required by the authority
- Type of method:
- effusion method: vapour pressure balance
Test material
- Reference substance name:
- 2'-methylacetoacetanilide
- EC Number:
- 202-267-0
- EC Name:
- 2'-methylacetoacetanilide
- Cas Number:
- 93-68-5
- Molecular formula:
- C11H13NO2
- IUPAC Name:
- N-(2-methylphenyl)-3-oxobutanamide
- Details on test material:
- ldentity: Confirmed by NMR and LC/MS
Physical state: White powder
Storage: Room temperature
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Temp.:
- 20 °C
- Vapour pressure:
- 0 hPa
- Temp.:
- 25 °C
- Vapour pressure:
- 0 hPa
- Temp.:
- 50 °C
- Vapour pressure:
- 0.001 hPa
Transition / decomposition
- Transition / decomposition:
- no
Any other information on results incl. tables
Thermal Stability
The DSC-measurements in closed glass crucibles showed an endothermic effect in the temperature range of 95 — 120 °C (melting) and no exothermal effects until a temperature of 400 °C.
Vapour Pressure Balance (Effusion Method)
The vapour pressure was measured in the temperature range of 19°C to 89°C.
Above 39 °C a vapour pressure could be measured. The measured vapour pressures at the corresponding temperatures are listed in the following table:
Temperature / °C |
Vapour pressure / hPa |
39.1 |
1.5× 10-5 |
43.4 |
2.6× 10-5 |
47.2 |
7.0× 10 -5 |
50.9 |
1.1× 10-4 |
55.4 |
2.5× 10-4 |
61.5 |
5.7× 10-4 |
66.9 |
1.2× 10-3 |
71.2 |
2.2× 10-3 |
78.7 |
5.8× 10 -3 |
84.0 |
1.0× 10-2 |
89.1 2.1× 10-2
Applicant's summary and conclusion
- Conclusions:
- The values for 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C.
- Executive summary:
The vapour pressure study was performed in 2010 and in accordance with the OECD Guideline 104, and EU Method A.4.
The calculated vapour pressure values are extrapolated:
T / °C
p / hPa
p / Pa
20
5.5× 10 -7
5.5× 10-5
25
1.4× 10 -6
1.4× 10-4
50
9.5× 10 -4
9.5× 10-2
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