Registration Dossier

Physical & Chemical properties

Water solubility

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Description of key information

For surface active substances, which can form micelles and show a complex solubility behaviour, due to aggregation, the monomer concentration, and hence the thermodynamic activity, reaches a limiting value at the critical micelle concentration (cmc). It remains approximately constant when the total concentration is further increased. For ecotoxicological models requiring a solubility value, the critical micelle concentration is therefore the appropriate parameter. This is also suggested in ECHA Guidance R.7a.

The measured cmc value of the registration substance is 28.2g/L at 25°C.

Key value for chemical safety assessment

Water solubility:
28.2 g/L
at the temperature of:
25 °C

Additional information