Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

All members of the category alcohol ethoxylates are readily biodegradable which is proved by several studies available for the certain mixtures. The potential of alcohol ethoxylates to persist in the environment is thus not given. Abiotic degradation like hydrolysis and photolysis is not an important process in case of alcohol ethoxylates due to the chemical structure of these substances.

Experimentally determined BCF-values given for pure homologues and summarized in the publication of Tolls et al. (2000) are used as read-across data for the endpoint bioaccumulation in water. It can be stated that bioaccumulation of alcoholethoxylates is regarded to be negligible as the surfactants will be rapidly metabolised. For more detail see endpoint summary for bioaccumulation.

Concerning transport and distribution of the alcohol ethoxylate mixtures a high adsorption of the substances is determined by using QSAR-models. Adsorption onto surfaces is an intrinsic property of alcohol ethoxylates and thus a high Koc-value is expected.