Registration Dossier
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EC number: 855-228-0 | CAS number: 4497-59-0
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 4 Aug - 12 Aug 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 020
- Report date:
- 2020
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Hessisches Ministerium für Umwelt, Klimaschutz, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany
- Type of method:
- effusion method: Knudsen cell
Test material
- Reference substance name:
- 1-(2,2,4-trimethyl-3,4-dihydroquinolin-l (2H)-yl)ethanone
- EC Number:
- 855-228-0
- Cas Number:
- 4497-59-0
- Molecular formula:
- C14 H19 N O
- IUPAC Name:
- 1-(2,2,4-trimethyl-3,4-dihydroquinolin-l (2H)-yl)ethanone
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Temp.:
- 20 °C
- Vapour pressure:
- 0 hPa
- Remarks on result:
- other: extrapolated from the experimental data (vapour pressure: effusion method)
- Temp.:
- 25 °C
- Vapour pressure:
- 0 hPa
- Remarks on result:
- other: interpolated from the experimental data (vapour pressure: effusion method)
Vapour pressure at 50°C (if relevant for classification of gas under pressure)
- Vapour pressure:
- 0.009 hPa
- Remarks on result:
- other: interpolated from the experimental data (vapour pressure: effusion method)
Any other information on results incl. tables
Individual results
The vapour pressure was measured in the temperature range of 25 °C to 60 °C. The measured vapour pressures at the corresponding temperatures are listed in the Table below. After the measurement a mass loss of approx. 100 % (w/w) was determined.
| Temperature / °C | Vapour Pressure /hPa |
| 25 | 4.1 x 10-4 |
| 45 | 5.3 x 10-3 |
| 50 | 8.7 x 10-3 |
| 55 | 1.5 x 10-2 |
| 60 | n.e. (not evaluable) |
No data point could be measured at 60 °C because at this temperature the test item evaporated completely from the crucible.
From the measured data the parameters A, B and C of the Antoine equation can be derived by regression.
log(p/ hPa) = A + (B/ (C + T [°C]))
The evaluated Antoine parameters are listed in the Table below.
| A | 13.68092 |
| B | -5086.68 |
| C | 273.15 |
The vapour pressure values for 20, 25 and 50 °C (see Table below) were interpolated (values at 25 °C and 50 °C) and extrapolated (value at 20 °C), using these Antoine constants A, B and C.
| T /°C | p /hPa | p /Pa |
| 20 | 2.1 x 10-4 | 2.1 x 10-2 |
| 25 | 4.2 x 10-4 | 4.2 x 10-2 |
| 50 | 8.7 x 10-3 | 8.7x 10-1 |
Applicant's summary and conclusion
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