Registration Dossier
Registration Dossier
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EC number: 218-529-2 | CAS number: 2173-57-1
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Conclusion on classification
Short-term aquatic toxicity data are available for two trophic levels (aquatic invertebrates and aquatic algae). The acute effect values for daphnids and algae (P. subcapitata) are EC50=0.34 mg/L and ErC50=0.31 mg/L, respectively. Based on this data, the substance needs to be classified as Acute 1 (H400) according to table 4.1.0(a) of EU CLP.
As only one reliable long-term toxicity endpoint is available, chronic classification needs to be based on both chronic and acute data in combination with the biodegradability of the substance and the worst case classification needs to be applied. Long-term aquatic toxicity data are available only for aquatic algae for which an ErC10 value of 0.11 mg/L was determined. Based on its non-rapid degradability and the chronic effect value in the range of 0.1 - 1 mg/L, the substance is classified as Chronic 2 (H411) according to table 4.1.0(b)(i). Based on its non-rapid degradability, the log Kow of > 4 (5.1) and acute toxicity data for the other trophic level with a value of ≤1 mg/L (Daphnia EC50 of 0.34 mg/L) the substance needs to be classified as Chronic 1 (H410) according to table 4.1.0 (b)(iii). Therefore, for long-term aquatic hazard, according to figure 4.1.1, based on the most stringent outcome of the chronic/acute data, the substance is classified as H410 (Aquatic Chronic 1) according to Regulation 1272/2008/EC (CLP).
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