Registration Dossier
Registration Dossier
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EC number: 905-908-9 | CAS number: -
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
The study on dissociation constant of the test substance can be waived.
Key value for chemical safety assessment
Additional information
Based on REGULATION (EC) No 1907/2006, Annex IX, column 2 (section 7.16), the study on dissociation constant does not need to be conducted if it is scientifically not possible to perform the test for instance if the analytical method is not sensitive enough. The test substance is a mixture of at least five compounds (i.e. Sodium acetate, Sodium bromide, Disodium succinate, Succinimide, Trolamine), with corresponding pKa-values according to calculations performed by ChemIDplus (2003): pKa (Sodium acetate) = 4.5, pKa (Sodium bromide) = not applicable, pKa (Disodium succinate) = 3.5 and 5.7, pKa (Succinimide) = 9.9, pka (Trolamine) = 8.4. Since the determination of the dissociation constant of this mixture is analytically not feasible, the study on dissociation constant of the test substance can be waived.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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