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Physical & Chemical properties

Dissociation constant

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Description of key information

The dissociation constant pKa at 20.2 ºC is 7.69 ± 0.017.

The sample tested contains different impurities and also NaOH as a stabilizer.

Key value for chemical safety assessment

pKa at 20°C:
7.69

Additional information

Dehydrated sample of IPP1-Na (produced by adding aqueous NaOH to IPP1).

Although the substance is defined as a solid, it is always produced as an aqueous solution.Therefore Chapter 9 and 10 in the CSA/CSR are based on the aqueous solution rather than the solid.