Registration Dossier
Registration Dossier
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EC number: 203-623-8 | CAS number: 108-86-1
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Conclusion on classification
Aquatic toxicity studies are available for two trophic levels, namely algae and invertebrates. The studies were not conducted according to GLP but are considered sufficiently reliable for an assessment of the aquatic hazard. For aquatic algae, one experimental study is available and an ErC50 (72 h) of 12.3 mg/L (measured, TWA) and a NOEC of 4.87 mg/L (measured, TWA) was determined. For aquatic invertebrates three short-term studies are available. The most reliable EC50 (48 h) value is 15.7 mg/L (nominal). The effect values of two other studies are lower (1.6 and 5.8 mg/L), however, these values were determined for an exposure period of only 24 h. Nevertheless, all values are above 1 mg/L and more or less in same range of magnitude. For the purpose of classification these values will be considered in order to reflect the worst case classification.
Conclusion on C&L:
The substance is not readily biodegradable. Aquatic toxicity studies are available for two trophic levels, i.e. algae and aquatic invertebrates. According to (EC) No 1272/2008 (7th ATP) and the Guidance on the Application of the CLP Criteria (ECHA, 2015) the worst case classification is derived based on the most sensitive acute effect value, taking into consideration that the substance is not readily biodegradable. Therefore, the substance is classified as Aquatic Chronic 2 (H411).
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