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Physical & Chemical properties

Dissociation constant

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Description of key information

A study on the dissociation constant does not need to be conducted. 

Key value for chemical safety assessment

Additional information

According to REACH Regulation (Annex IX, 7.16, column 2), the study on the dissociation constant is scientifically not justified as the surface active substance is a zwitterion (inner salt; amphoteric surfactant) that has both acid and alkaline properties at environmental relevant pH values and which dissociates in water rapidly with e.g. Na+ and Cl- acting as counterions.