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Physical & Chemical properties

Dissociation constant

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In accordance with section 1 of REACH Annex XI, the dissociation constant study specified under information requirement 7.16 of Annex IX does not need to be conducted as it is not scientifically relevant. Section R. of Chapter R.7a: Endpoint specific guidance states that the dissociation constant endpoint is not intended to cover the dissolution of salts from their crystal lattice into individual ions.
As the substance is a mixed metal oxide salt, it is therefore considered that that the dissociation constant study is not required.

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