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EC number: 931-038-4 | CAS number: -
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 2006 Version
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- No. 440/2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- dynamic method
- Key result
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- 0 hPa
- Remarks on result:
- other: The values for 20, 25 and 50 °C are calculated, using the Antoine constants
- Key result
- Test no.:
- #2
- Temp.:
- 25 °C
- Vapour pressure:
- 0 hPa
- Remarks on result:
- other: The values for 20, 25 and 50 °C are calculated, using the Antoine constants
- Test no.:
- #3
- Temp.:
- 50 °C
- Vapour pressure:
- 0.012 hPa
- Remarks on result:
- other: The values for 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C
- Conclusions:
- Vapour pressure: 9.9E-5 hPa at 20°C
- Executive summary:
The vapour pressure was determined following the dynamic method according to OECD guideline 104.
Vapour pressure: 9.9E-5 hPa at 20°C
The laboratory complied with a GLP standard according §19b ChemG certified last 17./18.06.2014.
Reference
The vapour pressure was measured with the dynamic method in the temperature range of 125 °C to 245 °C. The measured vapour pressures at the corresponding temperatures are listed in following Table:
| Temperature / °C | Vapour pressure / hPa |
| 125.3 | 7.9 |
| 144.2 | 20.0 |
| 163.8 | 49.5 |
| 192.3 | 146.0 |
| 208.8 | 249.3 |
| 228.0 | 495.2 |
| 244.9 | 695.8 |
| 222.1 | 399.0 |
| 197.8 | 194.0 |
| 176.5 | 96.6 |
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: Antoine parameters and extrapolated vapour pressures
| T/°C | p/hPa | log(p/hPa) = A+B/(C+T[°C]) |
| 20 | 9.9E-5 | A = 6.64455 |
| 25 | 2.6E-4 | B = -1320.38 |
| 50 | 1.2E-2 | C = 103.99 |
Description of key information
Vapour pressure extapolated from measurements beetween 125 to 244°C:
9.9E-5 hPa at 20°C
Key value for chemical safety assessment
- Vapour pressure:
- 0 hPa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure was determined following the dynamic method according to OECD guideline 104.
Vapour pressure extrapolated: 9.9E-5 hPa at 20°C
The laboratory complied with a GLP standard according §19b ChemG certified last 17./18.06.2014.
Study was conducted as the result from supporting study (OXEA 2010: 3 hPa@20°C) strongly devited from VP measurement data of homologous aldehydes.
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