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Dissociation constant

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Description of key information

the calculated pKa values are in the range of -7.28 to -2.13 for the sulphonated moieties, ca 4.46 for the anilines and ca 8.7/9 for diethanolamine/ethanolamine functional groups.

Key value for chemical safety assessment

Additional information

Leucophor 1111X is expected to be completely dissociated in aquatic compartment and that the ionic species are stable. In acid pH conditions, the diethanolamine/ethanolamine functional groups on triazine rings are expected to be protonated.