Registration Dossier

Administrative data

Hazard for aquatic organisms

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

Conclusion on classification

The following data are available for determining the classification and labelling requirements for the substance based on aquatic toxicity:

- A 24-hour EC50 value of 29.6 mg/L has been determined for the effects of the test substance on mobility of Daphnia magna.

- A 72-hour EC50 value of >100 mg/L and NOEC of ≥100 mg/L have been determined for the effects of the test substance on growth rate and biomass (yield) of Desmodesmus subspicatus.

The substance is not readily biodegradable (8% degradation in 28 days) and therefore meets the criteria for classification with R52/53 (Harmful to aquatic organisms. May cause long term adverse effects in the aquatic environment) according to EU Directive 67/548/EEC. In accordance with EC Regulation 1272/2008, ethylthioethanol meets the criteria for classification as Chronic Aquatic Cat. 3.