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Physical & Chemical properties

Vapour pressure

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Description of key information

The vapour pressure of 2-chloropropionic acid is 0.5 kPa at 20°C.

Key value for chemical safety assessment

Vapour pressure:
0.5 kPa
at the temperature of:
20 °C

Additional information

Five endpoints on the vapour pressure of 2-Chloropropionic acid are available tabulated below and standardised to kPa

 Source Value  Units  Temperature  Value Standardised to kPa IUCLID Reference  
 Sigma Aldrich Library of Chemical Safety Data (2nd Edition) 4  mm/Hg  20  0.5 001
Inchem.org   0.1  kPa  20  0.1 002 
IUCLID Dataset - BASF AG   hPa  60  0.4 003 
 IUCLID Dataset - BASF AG  30  hPa  100  3  003
Sigma Aldrich Safety Data Sheet    hPa  20  0.5  004

Since vapour pressure increases with temperature it is important to only consider results from the same temperature, so 20 degrees C is the chosen temperature, since the majority of results are available from this temperature. Standardising the results to units of kPa the available data indicates a vapour pressure of 0.5, 0.5 and 0.1.

Due to consistency between two independent values and the fact that one of the sources was peer reviewed, it is considered that 0.5 kPa at 20 degrees C can be taken to be the vapour pressure of 2-chloropropionic acid.