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Dissociation constant

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Description of key information

Weight of evidence approach based on two peer-reviewed values from handbooks (pKa = -1 and approx 0) and one calculated value (pKa = -1.3)

Key value for chemical safety assessment

Additional information

Nitric acid is considered a stong acid, its pKa being outside the pH range considered relevant for the environment. Although the temperature of measurements was not reported, the values are anticipated to refer to ambient temperature. The pKa is provided as a rounded-up mean value.

Value used for CSA: pKa = -1