Registration Dossier
Registration Dossier
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EC number: 821-451-7 | CAS number: 78920-10-2
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 toxicity results for Daphnia and algae are available for the substance. The 48h-EC50 for Daphnia magna was 0.12 mg/L based on analytically confirmed nominal concentrations. The 72h-ErC50 and 72h-ErC10 for algae are 17 mg/L and 2.7 mg/L, respectively, based on initially measured concentrations.
Short-term (acute) aquatic hazard
Since the acute EC50 value for Daphnia magna is <= 1 mg/L, the substance needs to be classified according to Regulation (EC) No 1272/2008 on classification, labelling and packaging of substances and mixtures (CLP) as Acute Category 1 (H400). The M-factor is 1.
Long-term (chronic) aquatic hazard
The only available chronic value is the 72h-ErC10 for algae. Therefore the chronic classification has to be determined based on this chronic value according to Table 4.1.0 (b) (i) (as the substance is not readily biodegradable) and based on the available EC50 value for Daphnia and environmental fate data according to Table 4.1.0 (b) (iii). The most stringent outcome is leading:
- As the chronic value for algae is > 1 mg/L, the substance does not need to be classified based on this key value according to the CLP Regulation.
- As the EC50 value for Daphnia is <= 1 mg/L, and because the substance is not readily biodegradable, the substance needs to be classified as Chronic Category 1 (H410). The M-factor is 1.
It is therefore concluded that the substance needs to be classified as Acute Cat. 1 (H400) and Chronic Cat. 1 (H410) according to the CLP Regulation.
In accordance with Article 27 of the CLP Regulation, only the hazard statement H410 could be used on the label, as the hazard statement H400 may be considered redundant.
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