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Physical & Chemical properties

Dissociation constant

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Description of key information

List of species and pKa value regarded at 20 °C:
pka=13.11 for C18:1 FA di component
pka=13.23 for C18:1 FA tri component

Key value for chemical safety assessment

pKa at 20°C:
13.11

Additional information

The dissociation constant of the substance sorbitan, (Z)-9.-octanoate (2:3) (CAS 8007-47-0) was determined by QSAR calculation with SPARC (v4.6) for the single components. The substance has four dissociable hydroxyl group, but there is no dissociation in the environmental relevant pH range between 5 and 9.