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EC number: 224-809-5
CAS number: 4500-29-2
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.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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