Registration Dossier
Registration Dossier
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EC number: 255-410-4 | CAS number: 41496-43-9
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From April 12, 2021 to August 12, 2021
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 021
- Report date:
- 2021
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 2006
- 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
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- gas saturation method
Test material
- Reference substance name:
- 2-methyl-3-(p-tolyl)propionaldehyde
- EC Number:
- 255-410-4
- EC Name:
- 2-methyl-3-(p-tolyl)propionaldehyde
- Cas Number:
- 41496-43-9
- Molecular formula:
- C11H14O
- IUPAC Name:
- 2-methyl-3-(4-methylphenyl)propanal
- Test material form:
- liquid
Constituent 1
Results and discussion
Vapour pressure
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.2 Pa
Any other information on results incl. tables
Headspace vapour concentrations of the substance as found after an equilibration time of 24 hours, 31 hours and 53 hours are exposed in Table 1.
Table 1: Calculated concentration (mg/l) of 2-methyl-3-(p-tolyl)propionaldehyde:
| Equilibration time (h) | Headspace concentration (µg/l) | Headspace concentration (g/m3) | 85% Average | 115% Average |
| 24 | 15.9 | 0.0159 | 0.0125 | 0.0169 |
| 31 | 15.6 | 0.0156 |
0.0125 | 0.0169 |
| 53 | 12.4 | 0.0124 | 0.0125 | 0.0169 |
Applicant's summary and conclusion
- Conclusions:
- Vapour pressure of 2-methyl-3-(p-tolyl)propionaldehyde : 0.2 Pa at 20°C
- Executive summary:
The vapour pressure of the test material 2-methyl-3-(p-tolyl)propionaldehyde has been determined to be 0.2 Pa at 20°C using the Gas saturation method.
Therefore:
Vapour pressure of 2-methyl-3-(p-tolyl)propionaldehyde : 0.2 Pa at 20°C
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