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Vapour pressure

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vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
September 23 - December 16, 2008
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study according to EU and OECD testing guideline
according to
EU Method A.4 (Vapour Pressure)
according to
OECD Guideline 104 (Vapour Pressure Curve)
Type of method:
dynamic method
20 °C
Vapour pressure:
4.6 Pa
25 °C
Vapour pressure:
8.3 Pa
50 °C
Vapour pressure:
95.2 Pa

The values for 20, 25 and 50 °C were calculated using Antoine constants:

A: 6.13628

B: -1046.87

C: 1200.02

with the equation log (p/hPa) = A + B/(C+T[°C]).

The vapour pressure of the test item is 4.6 Pa (20°C), 8.3 Pa (25°C) and 95.2 Pa (50°C).

Executive summary:

o-Chlorobenzaldehyde showed vapour pressures of 4.6 Pa (20°C), 8.3 Pa (25°C) and 95.2 Pa (50°C) in a study conducted according to EU testing method A.2 and OECD testing guideline 103.

Description of key information

Vapour pressure: 4.6 Pa at 20°C, 8.3 Pa at 25°C and 95.2 Pa at 50°C

Key value for chemical safety assessment

Vapour pressure:
4.6 Pa
at the temperature of:
293.15 K

Additional information

The vapour pressure was determined in a study conducted according to EU testing method A.4 and OECD testing guideline 104 and is considered reliable without restrictions.