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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Dissociation constant

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Administrative data

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Description of key information

In accordance with section 1 of REACH Annex XI, the dissociation constant study (required in section 7.16) does not need to be conducted as inspection of the chemical structure shows no functional groups which are associated with dissociation behaviour at relevant environmental conditions.

Key value for chemical safety assessment

Additional information

The dissociation constant of SBA was calculated using the ACD/I-Lab service ACD/LogP v8.02, and was reported as 15.31 ± 0.20. The substance will therefore predominantly exist in the undissociated form throughout the environmentally relevant pH range of 5 to 9. The information on the temperature was not reported.