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Physical & Chemical properties

Vapour pressure

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Description of key information

The estimation by calculation for the vapour pressure of quinine dihydrochloride is  1.59 E-08 Pa.

Key value for chemical safety assessment

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

Additional information

According to the database, ChemSpider, the vapour pressure of quinine dihydrochloride is 1.19E-010 Pa at 25°C. The estimated values for the vapour pressure of quinine dihydrochloride calculated by using the Antoine method, Modified Grain method and Mackay method differ in a range of > 6.7E-021 Pa and < 1.1E-011 Pa. All used models are calculated for an ambient temperature of 25°C. From the model predictions, the Modified Grain method is selected to provide an appropriate value for the vapour pressure. The estimated value by the Modified Grain method is 3.47E-015 Pa. Nevertheless, the highest vapour pressure of quinine dihydrochloride is 1.59E-08 Pa, reflecting the most conservative value. Thus, we consider the predicted value to provide an approximation of the vapour pressure, since empirical data has not been observed.