Registration Dossier
Registration Dossier
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EC number: 203-802-0 | CAS number: 110-77-0
Ecotoxicological Summary
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.
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