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Physical & Chemical properties

Vapour pressure

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Description of key information

The vapour pressure is predicted by MPBPWIN as 2.92E-009 Pa at 25 deg C using an experimental melting point of 103 deg C. The mechanism simply relates descriptors to a predicted value using a mathematical physchem expression. The descriptors fall within the data set used to validate the model. The use of a melting point to predict the vapour pressure, which is expected to achieve better results than relying on an estimated melting point as an input. Based on the results of a validation exercise during MPBPWIN development, there is increasing uncertainty in predictions for substances with very low vapour pressure. As uncertainties in the predicted value of the vapour pressure are not expected to significantly affect the safety assessment or safe handling of the substance based on the intended use under the EU REACH Regulation, the predicted value is considered adequate for the purpose of a registration under REACH.

Key value for chemical safety assessment

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

Additional information

The vapour pressure is predicted by MPBPWIN as 2.92E-009 Pa at 25 deg C using an experimental melting point of 103 deg C. The mechanism simply relates descriptors to a predicted value using a mathematical physchem expression. The descriptors fall within the data set used to validate the model. The use of a melting point to predict the vapour pressure, which is expected to achieve better results than relying on an estimated melting point as an input. Based on the results of a validation exercise during MPBPWIN development, there is increasing uncertainty in predictions for substances with very low vapour pressure. As uncertainties in the predicted value of the vapour pressure are not expected to significantly affect the safety assessment or safe handling of the substance based on the intended use under the EU REACH Regulation, the predicted value is considered adequate for the purpose of a registration under REACH.