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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Vapour pressure

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Description of key information

In the key study (SRC PhysProp Database, 2010) the experimentally determined value for the vapour pressure is indicated to be 0.0000449 mm Hg (corresponding to 5.99E-003 Pa) at 25 °C as cited from the original data source (Daubert, Danner, 1989). 
According to QSAR estimation methods (Lanxess, 2009, EPIWIN; Lanxess, 2007, Yaws), the vapour pressure is calculated to be 0.0001 mm Hg (corresponding to 0.013 Pa, Yaws method) and to be 4.22E-005 mm Hg (corresponding to 0.00563 Pa, EPIWIN method) at 25 °C, depending on the calculation method. At elevated temperatures, i. e. at 50 °C and 160 °C, the vapour pressure was determined to be <0.1 hPa and 6.7 hPa, respectively (Verschueren, 1996), and cited to be 1 Pa at 73 °C and 10 kPa at 220.5 °C in the CRC Handbook (2002).

Key value for chemical safety assessment

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

Additional information