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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Vapour pressure

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Description of key information

The vapour pressure of disodium 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. A default value of 1E-6 Pa was used for further risk assessment.

Key value for chemical safety assessment

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

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 disodium persulfate is 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 disodium persulfate is very low.