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Physical & Chemical properties

Dissociation constant

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Description of key information

The calculated pKa of guanidine is 14.00, showing that the cation part of the substance is always ionized in the environmentally-relevant pH range. As the measured pKa values of phosphoric acid are 1.97 and 6.82, also the anion part of the substance is always ionized.

Key value for chemical safety assessment

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