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EC number: 248-813-1 | CAS number: 28065-97-6
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 26 - 28 Sep. 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Hess. Ministerium für Umwelt, Klimaschutz, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany
- Type of method:
- effusion method: Knudsen cell
Test material
- Reference substance name:
- Oleic acid, compound with (Z)-octadec-9-enylamine (1:1)
- EC Number:
- 248-813-1
- EC Name:
- Oleic acid, compound with (Z)-octadec-9-enylamine (1:1)
- Cas Number:
- 28065-97-6
- Molecular formula:
- C34H69NO2 C36H67NO2 C36H69NO2 C36H71NO2 C36H73NO2
- IUPAC Name:
- oleic acid, compound with (Z)-octadec-9-enylamine (1:1)
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- 0.001 Pa
- Test no.:
- #2
- Temp.:
- 25 °C
- Vapour pressure:
- 0.002 Pa
- Test no.:
- #3
- Temp.:
- 50 °C
- Vapour pressure:
- 0.013 Pa
Any other information on results incl. tables
The vapour pressure was measured in the temperature range of 60 °C to 120 °C. The measured vapour pressures at the corresponding temperatures are listed in the table 1. After the measurement a mass loss of aprrox. 74% (w/w) was determined.
Table 1 Measured vapour pressures and corresponding temperatures
Temperature / °C |
Vapour pressure / hPa |
60 |
1.7 x 10-4 |
70 |
5.6 x 10-4 |
80 |
1.3 x 10-3 |
90 |
1.6 x 10-3 |
100 |
2.1 x 10-3 |
110 |
3.4 x 10-3 |
120 |
6.5 x 10-3 |
The values for 20, 25 and 50 °C are calculated using the Antoine constants A, B and C as shown in Table 2.
Table 2 Antonie parameters and extrapolated vapour pressures
T/ °C |
p / hPa |
log (p/hPa) = A + B/(C+T[°C]) |
20 |
1.3 x 10-5 |
A = 5.68618 |
25 |
2.0 x 10-5 |
B = -3097.98 |
50 |
1.3 x 10-3 |
C = 273.15 |
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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