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Physical & Chemical properties

Dissociation constant

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Description of key information

The dissociation constant (pKa) is 8.85 for 5-methyl-1H-benzotriazole and 9.15 for 4-methyl-1H-benzotriazole, predicted by SPARC.

Key value for chemical safety assessment

pKa at 20°C:

Additional information

The dissociation constant was calculated by SPARC. The physical properties predicted by SPARC are regarded "as reliable as most of the experimental measurements for these properties". [EPA/600/R-03/033, March 2003]