Registration Dossier

Physical & Chemical properties

Vapour pressure

Currently viewing:

Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
vapour pressure
Type of information:
other: data from handbook
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: peer-reviewed handbook
Qualifier:
according to
Guideline:
other: no data
Deviations:
not specified
GLP compliance:
not specified
Type of method:
other: handbook data
Key result
Temp.:
311.88 K
Vapour pressure:
0.1 Pa
Temp.:
334.61 K
Vapour pressure:
1 Pa
Temp.:
362.08 K
Vapour pressure:
10 Pa
Temp.:
396.24 K
Vapour pressure:
100 Pa
Temp.:
440.41 K
Vapour pressure:
1 000 Pa
Temp.:
500.7 K
Vapour pressure:
10 000 Pa
Temp.:
590.02 K
Vapour pressure:
101 325 Pa
Key result
Temp.:
298.15 K
Vapour pressure:
0.02 Pa

The reported vapour pressures of n-octadecane at various temperatures herein are the recommended ones (Ref. Ruzicka & Majer (1994), according to the Handbook of Physical-Chemical Properties and Environmental Fate for Organic Chemicals.

Conclusions:
- vapour pressure = 0.02007 Pa (at 25°C)
- vapour pressure = 0.1 Pa (at 38.7°C)
Executive summary:

According to the Handbook of Physical-Chemical Properties and Environmental Fate for Organic Chemicals, the vapour pressure of Octadecane is 0.02007 Pa at 25°C.

Endpoint:
vapour pressure
Type of information:
other: data from handbook
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: peer-reviewed handbook
Qualifier:
according to
Guideline:
other: no data
Deviations:
not specified
GLP compliance:
not specified
Type of method:
other: data from handbook
Key result
Temp.:
28.2 °C
Vapour pressure:
0.034 Pa
Conclusions:
vapour pressure = 0.034 Pa (at 28.2°C)
Executive summary:

The vapour pressure of the substance Octadecane, reported from Perry's Chemical Engineer's Handbook, is < 0.1 Pa (at ca. 30°C).

Description of key information

1) 0.034 Pa at 28.2°C (Perry`s Chemical Engineers`Handbook, 1999)

2) 0.02007 Pa at 25°C; 0.1 Pa at 38.7°C (Handbook of Physical-Chemical Properties and Environmental Fate for Organic Chemicals, 2006)

Key value for chemical safety assessment

Vapour pressure:
0.02 Pa
at the temperature of:
25 °C

Additional information

The values obtained are from literature sources with no specific details of methodology. However, the available information is consistent and provides sufficient data to allow a reliable result to be determined.

It is safe to say that the vapour pressure of octadecane is < 0.1 Pa at 30°C.