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Vapour pressure

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Description of key information

GLP study according to EU testing method A.4(Effusion method: Vapor pressure balance).
Analytical Development Physicochemistry, Bayer Schering Oharma AG, Berlin. Study report No. A49568 (ADP 2009_005), dated 2010-01-28.
Result: 7 E-12 Pa at 25 °C (298K)

Key value for chemical safety assessment

Additional information

The temperature dependence of the vapour pressure was determined with the Knudsen effusion method using a vapour pressure balance in the temperature range 134 °C to 159 °C.

The following vapour pressures were calculated for 20, 25 and 30 °C using a semilogarithmic linear regression based on the Antoin equation to be (with 95 %confidence intervall):

 

                                   P20 = 2.01 · 10 -12 Pa (1.53 · 10 -13  to 2.66 · 10 -11 Pa)

                                   P25 = 7.07 · 10 -12 Pa (6.18 · 10 -13  to 8.09 · 10 -11 Pa)

                                     P30 = 2.38 · 10 -11 Pa (2.39 · 10 -12  to 2.38 · 10 -10 Pa)