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Dissociation constant

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Description of key information

The pKa value of MBB was 5.86 obtained by a titration method. 

Key value for chemical safety assessment

pKa at 20°C:
5.86

Additional information

The dissociation constant of the 2 -Methoxymethyl-p-phenylenediamine (MBB)was determined following a method similar to OECD 112.

The determination of the pKa was done by titration. Only one of the both amino functions was captured by the titration.

The pKa value of MBB was 5.86.

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