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Physical & Chemical properties

Vapour pressure

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Description of key information

The vapour pressure of dipotassium persulfate at 25 °C was estimated at 6.07E-30 mm Hg corresponding to 8.09E-28 Pa using the Modified Grain Method of US EPA v4.0.

Key value for chemical safety assessment

Additional information

As the available experimental methods allow a determination of vapour pressure down to 1E-5 Pa only, no meaningful experimental determination of the vapour pressure for dipotassium persulfate was possible.

Therefore, in accordance with the respective EC method A.4 (440/2008/EC) no experimental determination of the vapour pressure was carried out. Notably, inorganic chemicals are outside of the EPIWIN (v4.0) domain. Nevertheless, the vapour pressure of dipotassium persulfate is very low.