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Physical & Chemical properties

Dissociation constant

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Description of key information

The homologous components of this UVCB substance possess ionizable amino and hydroxy groups whose estimated pKa values are calculated (amino groups) to be 1.3 and 6.3 for the lowest- as well as 1.4 to 6.3 and 14.1 to 14.7 for the highest molecular weitght homologues, as well as for (hydroxy groups) 14.7 (one group) for the lowest and 14.1 - 14.7 for the highest molecular weight homologue (total of four hydroxy groups). Pka values < 2 and > 14 are considere to be irrelevant for the chemical safety assessment (West, 2010).

Key value for chemical safety assessment

Additional information

The homologous components of this UVCB substance possess ionizable amino and hydroxy groups whose estimated pKa values are calculated (amino groups) to be 1.3 and 6.3 for the lowest- as well as 1.4 to 6.3 and 14.1 to 14.7 for the highest molecular weitght homologues, as well as for (hydroxy groups) 14.7 (one group) for the lowest and 14.1 - 14.7 for the highest molecular weight homologue (total of four hydroxy groups). Pka values < 2 and > 14 are considere to be irrelevant for the chemical safety assessment.)