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EC number: 290-636-7
CAS number: 90194-27-7
The substance, based upon its molecular structure, cannot be completely
mineralised by ready biodegradation. Indeed, the data available suggests
that while some partial degradation of the long chain hydrocarbons may
occur, the substance is highly stable in the presence of the mineral oil
solvent and, being highly insoluble in water, is considered to be not
prone to hydrolysis, although the limit of water solubility has
prevented this from being demonstrated experimentally. On the basis of
these factors, the substance is considered to be highly persistent in
the aquatic and terrestrial environment.
Based on the data available, however, the substance is not toxic to any
of the three trophic freshwater species tested. Due to the lack of
toxicity observed in the freshwater acute toxicity studies, it is
considered unlikely that the substance would be toxic to marine species.
The substance has also has an extremely high partition coefficient and
is predicted to have a low BCF. It is therefore considered that the
substance would not have the potential to bioaccumulate in the
The hydrophobic nature of the substance and the presence of the mineral
oil is, however, likely to lead to micelle formation at the surface of
water. It is hypothesised that the ionic sulphonate head will be
attracted to water while the hydrophilic tail will tend to the oil,
which may have the effect of forming an emulsion which may, in turn,
lower the surface tension of the water phase.
Based upon the persistence of the substance, possible micelle formation
and the oil based products with which the substance would be associated
throughout its lifecycle, strict controls are in place at sites where
the substance is produced, and where products containing the substance
are formulated, to remove the substance from any waste waters and
collect all waste contaminated with the substance in closed systems for
removal and destruction by incineration by a licensed waste disposal
operator. Similar containment is also required of all industrial,
professional and consumer users of products containing the substance for
controlled disposal by licensed waste disposal operators or by local
authorities as appropriate.
On the basis of the data available and the known properties of the
substance, it is considered that the substance does not trigger any of
the requirements for environmental classification. The registered
substance is therefore not classified.
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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