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Physical & Chemical properties

Vapour pressure

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Description of key information

The vapour pressure of test item BMDBM could not be measures as it is estimated to be far below 10-5 Pa at 30 °C. Based on an approximated boiling point of 408 °C, the vapor pressure of BMDBM was estimated to be 7.66 x 10-8 Pa at 25 °C. 

Key value for chemical safety assessment

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

Additional information

Based on a model calculation (QSAR) the gas saturation method was applied in the key study of Weissenfeld 2010. During this study, the vapour pressure of the test item BMDBM has been determined using the gas saturation method. The vapor pressure of BMDBM was determined to to be < 1.5 x 10-5 Pa at 30 °C.

Therefore, no further testing was performed and additional calculations based on the molecular structure of the test item were being conducted. The boiling point of BMDBM was calculated (non-GLP) using Meissner’s method to be approximately 408 °C. Based on this boiling point value and using the Modified Watson Correlation the vapor pressure of BMDBM was estimated to be 7.66 x 10-8 Pa at 25 °C, and therefore has to be considered as extremely low.

The result of the key study of Weissenfeld 2010 is getting supported by two more QSAR computations (EPIWIN, SPARC), which revealed results in the same order of magnitude, uniformly pointing in the same direction of a very low vapour pressure of the substance.