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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