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Physical & Chemical properties

Dissociation constant

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Description of key information

pKa1= 3  at 25°C  ( of pyrazole) 
pKa2= 0.3 at 25°C (of 2xNH-groups)

Key value for chemical safety assessment

Additional information

The test compound is extremely little soluble in water. Thus, an experimental determination of the dissociation constant is not possible.

The pKa was estimated based on [1] D. D. Perrin. Dissociation Constants of Organic Bases in Aqueous Solution and

[2] D. D. Perrin, Boyd Dempsey & E. P. Serjeant. pKa Prediction for Organic Acids and Bases.